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comp.sys.ibm.pc.hardware.* Frequently Asked Questions (FAQ) Part 3/5

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Archive-name: pc-hardware-faq/part3
Last-modified: 1997/11/10
Version: 1.25

See reader questions & answers on this topic! - Help others by sharing your knowledge
S) 4.0 Storage/Retrieval Devices

Q) 4.1  Why do I lose x Meg on my hard drive?
[From: Mike Long <mike.long@analog.com>]

The problem here is that there are two different measures of hard
drive storage, both called megabytes.  Computer hardware works on the
basis that one megabyte equals 2^20, or 1048576 bytes.  Hard drive
manufacturers, on the other hand, use a megabyte that has 1000000
bytes, because it makes the drive looks larger.  When buying a hard
drive, you should expect to lose almost 5% of what the manufacturer
claims the drive size to be.

The manufacturers are not totally at fault.  The first track of the
drive is used for the partition table and master boot record.  The
amount of data lost here depends on your drive parameters; usually
there are between 32 and 64 sectors (512 bytes/sector) on this first
track, so you lose between 16384 and 32768 bytes that way.

Additional space is taken up by two hidden files on your boot drive.
If you are running MS-DOS, these files are IO.SYS and MSDOS.SYS.  If
you are running PC-DOS, the names are IBMIO.COM and IBMDOS.COM.

[From: ralf@alum.wpi.edu (Ralph Valentino)]

Many drives these days advertise unformatted capacity.  The actual
formatted capacity may be significantly lower than this as space is
taken up marking tracks, sectors, CRC's, etc.  Exactly how much lower
depends on the the size of the sectors.  For instance, placing 1k
sectors on the disk instead of the usual 512 byte ones may slightly
increase the usable storage space on the disk.  Note, however, that
many OS's insist you stick to the 512 byte sectors so this option is
best left alone.

A large number of drives also do auto-mapping of bad sectors; when a
sector goes bad, it will automatically use a spare it kept aside
during the format.  This is very handy as the OS never needs to deal
with the problem and some OS's, like DOS, will mark a whole cluster
bad when a single sector goes bad.  These spare sectors, as many as
one per track, remain hidden from the OS but still take up space on
your hard drive.

When you get to drives larger than 1.0 gig (SCSI), many host adapter
BIOS's can not deal with this as the BIOS was never designed to handle
more than 1024 cylinders, 64 heads, and 32 sectors per track. (1024 *
64 * 32 * 512bytes/sec = 1.0 gig).  Luckily, some OS's (like OS/2)
ignore the BIOS all together and read the actual geometry from the
disk itself.  If, however, you're not using such an OS and you notice
that you only have 1.0 gig available, you may want to check with the
manufacturer of your SCSI host adapter to see if a newer BIOS is
available.


Q) 4.2  *Should I get an IDE/floppy/SCSI/parallel port tape drive?
Q) 4.3  I have two floppies. Can I add a floppy based tape drive?
 
[From: herbst@techunix.technion.ac.il (Herbst OMR)]

It depends. On all modern tape drives: yes. Some old tape drives
cannot do this (my old Jumbo). If you have one of these, you will have
to buy either a 4-floppy controller or a dedicated tape controller.

Q) 4.4  How fast is a tape drive? Will a dedicated controller improve this?

[From: herbst@techunix.technion.ac.il (Herbst OMR)]

The tape connected through a floppy interface is limited to the floppy
speed.  On ATs 500Kbit/S. On old XT 250Kbit/S. With card support for
2.88MB floppy, 1Mbit/S. Many of the newer cards support this transfer
rate.
 
If the card operate at 500Kbit/S, a dedicated controller card will
speed up the tape by a factor of two.  In many cases, those cards do
hardware compression, helping even more.

Q) 4.5  What is QIC80, QIC40?
 
[From: herbst@techunix.technion.ac.il (Herbst OMR)]

QIC stands for Quarter-Inch Cartridge. QIC80 is the standard for 80MB
tapes, QIC40 for 40MB tapes. Both standard allows for extended length
cassettes of 300ft which gives 120MB and 60MB respectively.

Q) 4.6  How come I can't fit as much stuff on my tape drive as they claim?

Most tape drives these days advertise capacity with an expected
compression ratio of 2:1.  If you are backing up compressed files
(.Z,.ZIP, .ARC, .JPEG, and so forth) then the drive's own compression
scheme will not be as effective.  For these cases, the actual capacity
of the tape will be closer to the "uncompressed" capacity.

A table from herbst@techunix.technion.ac.il (Herbst OMR) shows:

  stated capacity     standard        tape length         # tracks
 
  80MB                QIC40           200ft (normal)      15
  120MB               QIC40           300ft (extended)    15
  160MB (rarely)      QIC80           200ft               28
  250MB               QIC80           300ft               28
 
  For all the recording density is 12500 ftpi; max tape speed is 90 ips.

A second reason is that some tapes assume you will be taking full
advantage of their "streamers".  Streaming collects a number of tape
blocks and writes them all at once, preventing the need for backing up
the tape after each block.  This positions the blocks closer together
on the tape.  If your backup program is slow, some streamers won't be
quite as effective.  If you hear the tape drive motor backing up the
tape alot on writes, this could be the case.

Q) 4.7  Are Colorado/Conner/Archive/... tapes compatible with each other?

[From: herbst@techunix.technion.ac.il (Herbst OMR)] 

If you use the same software: Yes. If you want to use different
software, then turn compression off. Compression done in software on
those drives is not compatible.

Q) 4.8  How does the drive/software know how long the tape is?

[From: herbst@techunix.technion.ac.il (Herbst OMR)]
 
The magnetic tape has holes in it. Inside the cassette enclosure there
is a small mirror. The drive sends an IR beam through it. Near the end
of tape the drive receives it. If the IR receiver is dusted, the drive
may 'reel off' the cassette.

Q) 4.9  What are all those QICs?

[From: herbst@techunix.technion.ac.il (Herbst OMR)]
 
(Thanks to Karl-Peter Huestegge and Jan Christiaan van Winkel)
QIC-11 is not an Industry Standard and there exist some incompatible
versions.
 
 Standard      Capacity      Tracks   Speed  Rec-density Flux-Trans Cartridges
 ----------------------------------------------------------------------------
 QIC-11     15/30MB (300ft)     4/9   90ips
            20/40MB (450ft)     4/9   90ips               6400ftpi  DC300XL
                                                         10000ftpi  DC300XLP
            27/60MB (600ft)     4/9   90ips              10000ftpi  DC600A
 
 QIC-24     45MB (450ft/137m)    9    90ips    8000bpi   10000ftpi
            55MB (555ft/169m)    9    90ips    8000bpi   10000ftpi
            60MB (600ft/183m)    9    90ips    8000bpi   10000ftpi  DC600A
 
 QIC-120   125MB (600ft/183m)    15   72ips   10000bpi   12500ftpi  DC600A
 
 QIC-150   155MB (600ft/183m)    18   72ips   10000bpi   12500ftpi  DC600XTD
                                                                    DC6150
 QIC-150   250MB (1000ft/305m)   18   72ips   10000bpi   12500ftpi
 
 QIC-320   320MB (600ft/183m)    26   72ips   16000bpi   20000ftpi  DC6320
 
 QIC-525   525MB (1000ft/305m)   26   72ips   16000bpi   20000ftpi  DC6525
 
* QIC-1000  1000MB (760ft)
 
* QIC-2GB
 
* QIC-10GB
 
Q) 4.10  Which QICs are read/write compatible?

[From: herbst@techunix.technion.ac.il (Herbst OMR)]

 The left column should be read: "Tape drives designed for the QIC-???
 standard *should* be able to read/write the following Tape formats:"
 
 TAPE-DRIVES     |                     Tape - Formats                      |
 designed for:   | QIC-11 | QIC-24 | QIC-120 | QIC-150 | QIC-320 | QIC-525 |
 ----------------|--------|--------|---------|---------|---------|---------|
 QIC-11          |  R  W  |        |         |         |         |         |
 QIC-24          |  R  W  | R   W  |  R      |         |         |         |
 QIC-120         |  R  -  | R   -  |  R   W  |  R      |         |         |
 QIC-150         |  R  -  | R   -  |  R   W  |  R   W  |         |         |
 QIC-320         |  R  -  | R   -  |  R   W  |  R   W  |  R   W  |  ?   ?  |
 QIC-525         |  R     | R      |  R   W  |  R   W  |  R   W  |  R   W  |
 ---------------------------------------------------------------------------

Q) 4.11  What is the CMOS/jumper setting for my hard drive?
[From: Carsten Grammes (cagr@rz.uni-sb.de)]

		    Configuration of IDE Harddisks
		    ==============================


last update: 24 March 1994

collected by Carsten Grammes (cagr@rz.uni-sb.de)
and published on comp.sys.ibm.pc.hardware as part of the FAQ.



!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
There is explicitly NO WARRANTY that the given settings are correct or
harmless. (I only collect, I do not check for myself!!!). There is
always the possibility that the settings may destroy your hardware!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


Since I hope however that only well-minded people undergo the effort of
posting their settings the chance of applicability exists. If you should
agree or disagree with some setting, let me know immediately in order
to update the list.

If you possess a HD not mentioned here of which you know BIOS and/or
jumper settings, please mail them to me for the next update of the list!

Only IDE (AT-Bus) Harddisks will be accounted for.  If not specified the
Landing Zone should be set equal to the number of cylinders. If not
specified the 'Write Precompensation' should be set 65535. (There are
BIOSes that don't even ask for it).  On most IDE disks these values are
dummies, relicts from old MFM times.

The capacity given here is sometimes in Megabytes (1000000 bytes) and
sometimes in MB (1048576 bytes). Don't worry! The only right way to calculate
the capacity is
    cyl * heads * sec/tr * 512 
which gives the capacity in bytes!  Dividing by 1000000 or 1048576 gives
the capacity in Megabytes or MB respectively.

If you get problems when installing 2 HD's with correct BIOS and jumper
settings, try to swap drive 1 and 2, often that helps.

Please don't flame me because of the 'layout' of the list. Since the
available information is so strongly varying I often only pack _YOUR_
mail to me into the list. If someone feels encouraged to improve this,
I would be glad to receive a 'lifted' version. But there should be all
info contained!

Since the list is rather long, I give here a summary of all drives
described therein.

************* ALPS Alps alps
DR311C

************* CDC Cdc cdc
BJ7D5A	 94155-48   94335-100  94166-141   94171-300  736 SABRE
BJ7D5A	 94295-51   94355-55   94166-182   94171-344  850 SABRE
BJ7D5A	 94155-57   94355-100  94186-383   94181-574  1230 SABRE
94155-21 94155-67   94155-135  94186-383H  94208-51
94155-25 94155-77   94205-77   94186-442   94211-91
94155-28 94155-85   94355-150  94216-106   94221-190
94155-36 94155-86   94335-150  94356-200   94351-172
94155-38 94205-51   94156-48   94161-86    368 SABRE
94335-55 94156-67   94166-101  94161-121   500 SABRE

************* CONNER Conner conner
CP342	CP2034	 CP2084   CP3044  CP3104  CP3204  CP30084
CP344	CP2044	 CP3000   CP2124  CP3111  CP3204F CP30104
CP2024	CP2064	 CP3024   CP3184  CP3114  CP30064 CP30084E

CP30174E  CP30174E  CP3304  CP3544
CP30204   CP30204   CP3364  CP3554
CP30254   CP30254   CP3504  CP30101

************* FUJITSU Fujitsu fujitsu
M2611T	M2612ET  M2613ET  M2614ET  M2618T  M2622T  M2623T  M2624T

************* HEWLETT PACKARD Hewlett Packard hewlett packard HP Hp hp
C2233

************* IBM Ibm ibm
WDA-L160   WDA-L42   IBM 85 MB IDE (number not known)

************* JVC Jvc jvc
JD-E2085M

************* KALOK Kalok kalok
KL3100 KL3120

************* MAXTOR Maxtor maxtor
LXT-200A  2585A  7120A
LXT-213A  7040A  7131AT
LXT-340A  7060A  7213A
LXT437A   7080A  7245A
LXT535A

************* MICROPOLIS Micropolis micropolis
2105A	  2112A

************* MICROSCIENCE Microscience microscience
7100-00  8040-00  7070-20  7100-00  7100-20  8040

************* MINISCRIBE Miniscribe miniscribe
8225AT	8051AT	8450AT

************* NEC Nec nec
D3735  D3755  D3756  D3741

************* QUANTUM Quantum quantum
40AT	 LPS52AT      ELS42AT
80AT	 LPS80AT      ELS85AT
120AT	 LPS105AT     ELS127AT
170AT	 LPS120AT     ELS170AT
210AT	 LPS170AT     LPS540A
425AT	 LPS240AT

************* RODIME Rodime rodime
RO3058A  RO3088A  RO3095A  RO3128A  RO3135A  RO3059A  RO3089A
RO3129A  RO3139A  RO3209A  RO3259A

************* SAMSUNG Samsung samsung
SHD-3101A  SHD-3061A  SHD-3062A

************* SEAGATE Seagate seagate
ST1057a     ST1144a	ST138a	    ST274a	ST3283a
ST1090a     ST1156a	ST1400a     ST280a	ST351ax
ST1102a     ST1162a	ST1401a     ST3051a	ST9051a
ST1111a     ST1186a	ST1480a     ST3096a	ST9077a
ST1126a     ST1201a	ST157a	    ST3120a	ST9096a
ST1133a     ST1239a	ST2274a     ST3144a	ST9144a
ST3243A     ST125a	ST2383a     ST325ax
ST351AX
ST9235A     (maybe others)

************* TEAC Teac teac
SD-3105

************* TOSHIBA Toshiba toshiba
MK1122FC  MK2024FC  MK2124FC  MK2224FC	MK234FCH  MK234FCF

************* WESTERN DIGITAL Western Digital western digital
WDAC140  WDAC280  WDAC1170  WDAC2120  WDAC2170	WDAC2200  WDAC2250
WDAC2340 WDAC2420 WD93044-A WDAH260   WDAH280	WDAP4200
WD93048A



And here it comes...


************* ALPS Alps alps *************

Manufacturer: ALPS ELECTRIC Co.

BIOS settings:
Model   Heads  Cylinders  Sectors  L-Zone Size
DR311C   14      868        17      868   105 MB

(Real geometry of drive:
   2108 cyl.  2 heads  49 sectors/track
   32k internal cache)

Jumpers:
  C/D
 -ACT
 -DSP
 -HSP
  MS3
  SYNC
  DC
  MS0
  MS1
  MS2

Master drive & no slaves present: jumpers on C/D and -ACT.
No other jumpers installed, function unknown.


***************************   C D C ***********************************

I have the feeling that not all of these are IDE...

-------------------------------------------------------------------------------
MODEL	 ST-506 	CAP   CYL  H  RWC  WPC ENC  RATE ACCESS  SPT COMMENTS
-------------------------------------------------------------------------------
BJ7D5A  77731614 5.25FH  23   670  4  375  375 M    5             17
BJ7D5A  77731608 5.25FH  29   670  5  375  375 M    5             17
BJ7D5A  77731613              733  5  -    -        5             17
94155-21 WREN-1 5.25FH   21   697  3  698  698 M    5    28 MS    17
94155-25                 24   697  4  698  128 M    5             17
94155-28                 24   697  4  698  128 M    5             17
94155-36 WREN-1 5.25FH   36   697  5  698  698 M    5    28 MS    17
94155-38                 31   733  5  734  128 M    5             17
94155-48 WREN-2 5.25FH   40   925  5  926  926 M    5    28 MS    17
94295-51 WREN-2 5.25FH   43   989  5  990  990 M    5    28 MS    17
94155-57 WREN-2 5.25FH   48   925  6  926  926 M    5    28 MS    17
94155-67 WREN-2 5.25FH   56   925  7  926  926 M    5    28 MS    17
94155-77 WREN-2          64   925  8  926  926 M    5             17
94155-85 WREN-2 5.25FH   71  1024  8   -    -  M    5    28 MS    17
94155-86 WREN-2 5.25FH   72   925  9  926  926 M    5    28 MS    17
94205-51       5.25HH    43   989  5  990  128 M    5    32 MS    17
94335-55        3.5"     46  -     5   -    -  M    5    25 MS    17
94335-100       3.5"     83  -     9   -    -  M    5    25 MS    17
94355-55   SWIFT-2 3.5"  46  -     5   -    -  M    5    16.5 MS  17
94355-100       3.5"     83  -     9   -    -  M    5    16.5 MS  17
    ST-506 RLL
94155-135 WREN-2 5.25HH  115  960  9   -    -  R    7.5  28 MS    26
94205-77  WREN-2 5.25HH  63   989  5   -    -  R    7.5  28 MS    26
94355-150        3.5"    128 -     9   -    -  R    7.5  16.5 MS  26
94335-150        3.5"    128 -     9   -    -  R    7.5  25 MS    26
    ESDI
94156-48   WREN-2        40   925  5  926  926 N    5    28 MS
94156-67   WREN-2        56   925  7  926  926 N    5
94156-86   WREN-2        72   925  9  926  926 N    5
94166-101  WREN-3 5.25FH 86   969  5  970  970 N    10   16.5 MS
94166-141  WREN-3 5.25FH 121  969  7  970  970 N    10   16.5 MS
94166-182  WREN-3 5.25FH 155  969  9  970  970 N    10   16.5 MS
94186-383  WREN V 5.25FH 383 1412 13   -    -  R/N  10   8.3 MS
94186-383H WREN V 5.25FH 383 1224 15   -    -  R/N  10   14.5 MS
94186-442  WREN V 5.25FH 442 1412 15   -    -  R/N  10   16 MS
94216-106  WREN-3 5.25FH 91   969  -   -    -  N    10   16.5 MS
94356-200  SWIFT 3 3.5"  172 -     9   -    -  R/N  10   16.5 MS
WREN III          5.25HH 106  969  5   -    -  R/N  10   18 MS
    SCSI
94161-86   WREN-3 5.25FH 86   969  -   -    -            16.5 MS
94161-121  WREN-3 5.25FH 121  969  -   -    -            16.5 MS
94171-300  WREN-4 5.25FH 300 1365  9   -    -  R         16.5 MS
94171-344  WREN V 5.25FH 344 1549  9   -    -  Z    9-15 17.5 MS
94181-574  WREN V 5.25FH 574 1549 15   -    -  Z    9-15 16 MS
94208-51
94211-91   WREN-3 5.25FH 91   969  -   -    -            16.5 MS
94221-190  WREN V 5.25HH 190 1547  5   -    -  R    10-15 8.3 MS
94351-172  SWIFT 4 3.5"  172 -     9   -    -       10   16.5MS
WREN III         5.25HH  106  969  5   -    -  R/N  10   18 MS
    SMD
368 SABRE  8"            368 -    10   -    -       1.8  18 MS
500 SABRE  8"            500 -    10   -    -       2.4  18 MS
736 SABRE  8"            741 -    15   -    -       1.8  16 MS
850 SABRE  8"            851 -    15   -    -       2.4  16 MS
1230 SABRE 8"           1236 1635 15   -    -       2.4
-------------------------------------------------------------------------------

    CAP   = CAPACITY IN FORMATTED MEGABYTES
    CYL   = MAXIMUM NUMBER OF CYLINDER
    H     = NUMBER OF DATA HEADS
    RWC   = START REDUCED WRITE CURRENT
    WPC   = START WRITE PRECOMP
    ENC   = ENCODING METHOD R=RLL, M=MFM,Z=ZBR
    RATE  = TRANSFER RATE IN MEGABITS/SEC
    ACCESS= AVERAGE ACCESS TIME
    SPT   = SECTORS/TRACK X 512 bytes
    FH    = FULL HIGH FORM FACTOR
    HH    = HALF HIGH FORM FACTOR
    R     = RLL (run length limited)
    N     = NRZ (non return to zero)
    M     = MFM (modified frequency modulation)
    SA    = STAND ALONE
    Z     = ZBR

Jumpers are not know (yet).


************************** CONNER Conner conner **************************

Conner drives are low level formatted at the factory. It is only necessary to r
un SETUP, FDISK and DOS FORMAT.
          
Model     Hds  Cyls  Sec    Pcomp  L-Zone    Type    Table  LED
CP342     4    805   26       0    805        17       n/a  A
CP344     4    805   26       0    805        17       1    A
CP2024    2    653   32       0    653         2       3    n/a
CP2034    2    823   38       0    823       *UT       3    n/a
CP2044    4    552   38       0    552        17       3    n/a
CP2064    4    823   38       0    823       *UT       3    n/a
CP2084    8    548   38       0    548       *UT       3    n/a  
CP3000    2   1047   40       0   1047        17       1    A
CP3024    2    636   33       0    636         2       1    A
CP3044    1   1047   40       0   1047        17       1    A
          5    980   17   (also reported)
CP2124    8    560   53       0    560       *UT       3    n/a
CP3184    6    832   33       0    832       *UT       1    A
CP3104    8    776   33       0    776       *UT       1    A
CP3111    8    833   33       0    833       *UT       1    A(?)
CP3114    8    832   33       0    832       *UT       1    A
CP3204    16   683   38       0    683       *UT       2    B
CP3204F   16   683   38       0    683       *UT       3    B
CP30064   4    762   39       0    762       *UT       2    B
CP30084   8    526   39       0    526       *UT       2    B
CP30104   8    762   39       0    762       *UT       2    B
CP30084E  4    903   46       0    903       *UT       4    C
CP30174E  8    903   46       0    903       *UT       4    C
CP30204   16   683   38       0    683       *UT       4    C
CP30254   see below
CP3304    16   659   63       0    659       *UT       4    D 
CP3364    16   702   63       0    702       *UT       4    C
CP3504    16   987   63       0    987       *UT       4    D
CP3544    16   1024  63       0    1024      *UT       4    C
CP3554    16   1054  63       0    1054      *UT       3    B

Table 1 jumper settings: 
     Single drive = Jumper ACT and C/D 
     Master drive = Jumper ACT, C/D and DSP.
     Slave drive = No jumpers installed.

Table 2 jumper settings:
     Single drive = Jumper E2
     Master drive = Jumper E1 & E2
     Slave drive = No jumpers installed.

Table 3 jumper settings:
     Single Drive = Jumper C/D
     Master Drive = Jumper C/D and DSP
     Slave Drive = No jumpers installed

Table 4 jumper settings:
     Single and Master drive = Jumper C/D
     Slave drive = no jumper




ALL CONNER 20 MBYTE DRIVES USE DRIVE TYPE 2. ALL CONNER 40 MBYTE DRIVES USE DRI
VE TYPE 17.                                        * 

UT = Universal translate. Select a drive type that is close to, but does not ex
ceed the megabyte capacity of the drive. The drive will translate to the megaby
te capacity you have selected.

 LED
A: J-4         B: J-1         C: J-5         D: J-3
Pin 1 = +      Pin 3 = +      Pin 3 = +      Pin 3 = +
Pin 2 = -      Pin 4 = -      Pin 4 = -      Pin 4 = -

Conner drives are low level formatted at the factory. It is only necessary
to run SETUP, FDISK, and DOS FORMAT.

Comment concerning CP3000 jumpers:

   According to your list, all Conners should be 2 or 3 jumpers only.
That's why I'm puzzled with the 4-jumper Conner CP-3000.
In addition to the common jumpers present in
Conner - C/D, DSP & ACT, there is an extra one: HSP
By trial and error, HSP seems to follow DSP setting.


> When I installed a Conner CP3204F (203 MB) as master and a WD Caviar 2200
> (203 MB) as slave, both with and without the "CP" jumper, the Caviar had
> seemingly normal behaviour. However, when doing writes to the Caviar, once
> in a while it would overwrite directories etc. Using FASTBACK was almost
> impossible.
> 
> The workaround is to install the Caviar as the master, and the Conner
> as the slave.

and:
information: I am slaving a Conner CP3000 40Meg to a Western Digital
Caviar 2200 212 Meg.

the results: I first found out that pin 1 on the CP3000 was LABELED
INCORRECTLY on the PC board....had to flip the IDE cable (which made the
cable install much more cleanly- no flips....shoulda been my first clue
that something was not correct, oh well)

next: I had to DOS-format the CP3000 ALONE on the PC system before it
wanted to work with the WD caviar.... weird
also: the WD Caviar is partitioned: C:\ was the first 100 Meg and D:\ was
the second 100 Meg.  After the CMOS was correctly configured and the
drives brought online, the PC AUTOMATICALLY assigned the drives as thus:
C:\ first 100 Meg partition on the WD
D:\ 40 Meg Conner
E:\ second 100 Meg partition on the WD
even FDISK reports the above.  


Conner CP 30254

Capacity: 250 MB
Dimensions: 3,5 inch, lowprofile (1 inch)
IDE interface
              		 Cylinders Heads Sectors

Physical specs.:         1985      4     62
Logical specs.:		 895       10    55

seek time 12 ms
Rotation speed 4542 rpm

jumpers  	C/D
1 drive master	Y
2 drive master	Y
2 drive slave	N/Y


----

Subject: Re: Conner CP 30254

I tried several combination and even called Conner for info on
configuring two Conner drives as master (301??, a 300+ M Connder
drive) and slave (30254).  The jumpers that worked are:

		Pins 	Jumpers
Master		1-2	   Y 	 (factory setting)
	        3-4	   Y	 (factory setting)

Slave		1-2	   N
		3-4	   Y	 (factory setting)

So the C/D should mape to Y/N instead of N/Y in the table.
--
Some notes made whilst configuring a pair of Conner IDE drives
for Master/Slave operation from Hyundai Super-LT6 Laptop 386sx-20.

Final Working Configuration

Drive 1:	CP3000	40 Mb	Type 17
977 cyl 5 hds	17 sec/trk	Pre 300 LZ 977

Verified configuration as per Grammes' list. HSP does need to
follow DSP (empirically) - failure to do so produced behaviour
such as LCD screen display scrambling on ROM boot.

Single, Master and Slave configurations all checked out.

Drive 2:  CFA170A 170 Mb  Unknown type
332 cyl 16 hds	63 sec/trk	Pre --- LZ ---

Did not appear on Grammes' list. Successful configuration resulted
close to that shown as Table 3 for Conner drives, as follows:

	Single		2 links 	(not C)/D and (not A)/(?)
	Master		1 link		(not C)/D
	Slave		0 links

One link is listed here as (not A)/(?) due to a hole being drilled
through the (?) part of the silk screening ...

The drives worked together as either slave or master ...
--
Connor CP30101
760 cyl, 8 hds, Precomp -1, Landing 760, Sec/Track 39, ECC 7 Capacity 121.41M


Model CP342 disk (40 Meg IDE drive)
  Single Drive: E5, E7 jumpers IN
  Master Drive: E6, E7 jumpers IN
  Slave Drive:  E7 jumper IN

In addition, this is an old disk drive.  It was factory configured to
use 3:1 interleave.  This can cause timing problems with newer disk
drives that are configured for 1:1 interleave when using the same IDE
controller.  The CONNER tech support person suggested I only use the
CONNER drive as a SLAVE with the newer disk as the MASTER.

This configuration (MAXTOR 7345A as MASTER and CONNER CP342 as SLAVE)
has now been in use for over a week and seems to be working fine.


************************  FUJITSU Fujitsu fujitsu  ***************************

DETAILS OF FUJITSU DRIVES M261xT (Standard)

                   M2614ET     M2613ET     M2612ET     M2611T

Heads (physical)       8           6           4           2
Cyl (physical)      1334        1334        1334        1334
Sec/trk               33          33          33          33
Speed (rpm)         3490        3490        3490        3490
Capacity           180MB       135MB        90MB        45MB


              +-----------------------------------------------+
              |                                               |
              +--+                                            |
        PSU   |  |      CNH-2                                 |
              +--+          1                                 |
            1 |  |          .                    LED          |
              |  | CNH-1    9      CNH-3      Connector       |
              |  |   1           6..1            o o          |
      40-way  |  |   .                           | |          |
        IDE   |  |   .                                        |
              |  |   .                                        |
              |  |  12                                        |
              +--+                                            |
              +-----------------------------------------------+



                 Pin        Function
                 Position

                 *  1- 2    Active mode
                    2- 3    Slave present mode
                    4- 5    Pin 27=IOCHRDY
CNH-1 JUMPERS    *  5- 6    Pin 27=RESERVED
                    7- 8    2 drive system
                 *  8- 9    1 drive system
                   10-11    Pin 29=IRQ14 : Pin 31=RESERVED
                 * 11-12    Pin 31=IRQ14 : Pin 29=RESERVED


                 Pin        Function
                 Position

                    1- 2    SLAVE drive mode
CNH-2 JUMPERS    *  4- 5    MASTER drive mode
                    7- 8    ECC 4 bytes
                 *  8- 9    ECC 7 bytes


                 Pin        Function
                 Position

                    1- 2    Write protect enabled
CNH-3 JUMPERS    *  2- 3    Write protect disabled
                    4- 5 -6 Reserved

Key:  * (I guess!) marks factory default setting for jumper


BIOS SETTINGS

BIOS setting for the M2614ET in my system is 667 cylinders, 33 sectors
and 16 heads.

> I was trying to set my IDE drive in the subject above to a slave drive for
> A Conner 170MB drive and contacting the support company gave me this answer (which works). The factory default on SW2 is On Off Off Off Off Off (1-6). This sets the drive to be a single drive. Setting SW2 to Off On On Off Off Off makes it a slave drive. SW1 has been set to On Off Off On (1-4) all along.



MODEL      CYLINDERS   HEADS    SECTORS   CAPACITY (Million bytes)

M2622T      1013        10        63         326.75
M2623T      1002        13        63         420.16
M2624T      995         16        63         513.51


There are 6 switches on the switch block on these drives.  Only 4 of 
them have a use that I am aware of (from my M2624T manual):

Master/Slave        Master (*)      SW1-5 OFF
                    Slave           SW1-5 ON
ECC bytes           4 bytes (*)     SW1-4 OFF
                    7 bytes         SW1-4 ON
Write Protect       Disabled (*)    SW1-3 OFF
                    Enabled         SW1-3 ON
IO Channel Ready    Disabled (*)    SW1-1 OFF
                    Enabled         SW1-1 ON

I have no idea about the function of SW1-2 and SW1-6.  The values 
listed with a (*) are the factory default settings.


M2618T	202MB	Cyl/hd/spt  718 12 48


*********************	Hewlett Packard   ****************************
HEWLETT PACKARD Hewlett Packard hewlett packard HP Hp hp

C2233	227 MB	Cyl/hd/spt  733 12 53


*********************	IBM Ibm ibm   ****************************

WDA-L160    163 MB	Cyl/hd/spt  984 10 34
WDA-L42	    42MB	Cyl/hd/spt  977 5 17

Jumpers for IBM WDA-L160:

Fit JP2 for Master or single drive

Remove JP2 and fit JP3 for Slave

JP1 appears to be always fitted.

Functions of other jumpers unknown at present.

Position of jumpers:

		-----------------------------------------
		|          Drive Mechanism              |
		|					|
		-----------------------------------------
				PCB		. . . . 
					        . . . .

					JP      4 3 2 1	


Also:

IBM 85 M IDE (number not known)

10 Heads	984 Cylinders		17 Sectors	0 WPC	984 LZ

Patches as for L160 above


*********************	JVC Jvc jvc   ****************************

JD-E2085M   79 MB	Cyl/hd/spt  973 4 43


***********************    KALOK Kalok kalok	***************************

KALOK	KL3100	  105 MB
BIOS:	cyl 979     heads 6	sectors 35

KALOK   KL3120    120 MB
BIOS:	 Cyl 981     heads 6     sectors 40

The following jumper settings have been reported for KL3100 but are probably
also valid for other Kalok drives.

Single HD:
o o o o o

o o o o-o    <-- same row as pin 1 of the IDE connector.

Master (disk 1):
o o o o o
    |
o o o o o

Slave:
o o o o o
      |
o o o o o

These 5 pairs of pins are at the righthand side of the disk.



************************   MAXTOR Maxtor maxtor   ***************************

Model           Cyls    Heads   Sectors Precomp Landing Zone
----------	-----	-----	-------	-------	------------
LXT-200A	816	15	32	0	816
LXT-213A	683	16	38	0	683
LXT-340A	654	16	63	0	654
LXT437A		842	16	63	0	842
LXT535A		1036	16	63	0	1024

Jumpers are as follows:

The bottom of the drive looks like this (well, sort of):

|        o o 1-2             |
|        o o 3-4             |
|        o o 5-6             |
|        o o 7-8             |
|        o o 9-10            |
|                            |
+[POWER] [IDE CONNECTOR]-----+

				Single drive	  Dual Drive System
Pin numbers	Jumper		System		Master		Slave
-----------	------		------------	------		-----
1-2		Slave Drive	remove		remove		install
3-4		Activity LED	optional	optional	optional
5-6		Slave Present	remove		remove		optional
7-8		Master Drive	remove		install		remove
9-10		Sync Spindle	remove (n/a)	optional*	remove

* only one drive (the master) in an array should have this jumper installed.


		Hd    Cyl   spt
Maxtor 2585A	10    981   17

Maxtor 7060A    16    467   17     62,0 J14 closed, J13 closed
Maxtor 7060A     7   1024   17     59,5 J14 open,   J13 open
Maxtor 7060A     4    762   39     58,0 J14 closed, J13 open
Maxtor 7060A     8    925   17     57,9 J14 open,   J13 closed

Maxtor 7120A    16    936   17    124,3 J14 closed, J13 closed
Maxtor 7120A    14   1024   17    119,0 j14 open,   J13 open
Maxtor 7120A     8    762   39    116,0 J14 closed, J13 open
Maxtor 7120A    15    900   17    112,0 J14 open,   J13 closed
Maxtor 7120A     8    824   33    106,2 J14

Jumpers for the above 2 drives:

                  J11  I/O-channel ready ( open: disabled; close: enabled )
                  J13  see above
                  J14  see above
                  J15  operation-status ( open: normal; close: factory )
       J J J J J            
       2 1 1 1 1
       0 9 8 7 6

Power  data-cable

J16: Idle mode latch ( open: disabled; close: enabled )
J17: drive model ( open: 7060A; close 7120A )
J18: ECC Bytes ( open: 7 bytes; close: 4 bytes )

Master/Slave: drive is master and alone    : J20 closed, J19 closed
              drive is master of two drives: J20 closed, J19 open
              drive is slave of two drives : J20 open  , J19 closed


Maxtor 7213A

Default (power-up) AT BIOS Translation Parameters (others possible)
Cyl   Hds  SpT  MBytes
683   16   38   212

There are two sets of jumpers. A set of 5 and a set of
4. With the power and IDE connector toward you, the set of 5 is
numbered (left to right) J16 - J20  , and the set of 4 is numbered
(bottom to top) J22-J25. 

The only jumper of normal interest is J20. Jumper it for only
drive in a single drive system, or master drive in a dual drive
system.
 
Remove the jumper J20 for slave drive in a dual drive system. 

J19 is a dummy and may be used to store the spare shunt if the 
drive is configured for a slave mode.

Jumpers J17, J18, J24, J25 are factory reserved. Abnormal operation
may occur if jumpered.

Jumper 22 is sync spindle enabled/disabled  (open=disabled)
Jumper 23 is sync slave/master              (open=slave)
Jumper 16 is I/O Channel Ready              (open=disabled)


Maxtor 7245A (245Mb IDE; self-parking; Universal Translate):
Drive type : User defineable
Cyl    Hds    WPC    LZ     S/T
967    16     0      0      31      (WPC and LZ optional)

Master(2):  J20 closed
Slave(2):   J20 open (use J19 for shunt storage)
Single:     J20 closed


 
 Basic Specifications                                       
 -------------------------------------------------------------------
         Formated              Data          Sect.         Average
 Model   Capacity   Cylinders  Heads  Disks  Track  Cache  Seek Time
 7080A   82.2 MB    1.170      4      2      36     32k    17ms  
 7040A   41.1 MB    1.170      2      1      36     32k    17ms  
 
 AT BIOS Translation Parameters
 ---------------------------------+---------------------------------
 Model  Cyls  Heads  Spt   MB     |  Model   Cyls  Heads  Spt   MB
 7080A  1039    9    18    82.1   |  7040A   524     4    40    40.9 
         981   10    17    81.4   |          981     4    17    40.7 
         832    6    33    80.4   |          977     5    17    40.5  
         497   10    33    80.0   |                                 
        1024    9    17    76.5   |                                 
 
 Technical Notes:
 ------------------------------------------------------------------------
 * The WPC and Landing Zone BIOS entieres do not need a specific number 
   for proper operation. Maxtor AT interface hard drives will ignore and
   override any numbers programmed.             

 * Drive is low-level formated with 1:1 interleave at factory, with any 
   defects retired to a dedicated non-destructive zone.
 
 * The drive's on-board controller will auto-translate every cylinder, 
   head, and SPT combination listed in the parameters table. Therefore, 
   configuration jumpers J13 and J14 are not required for most AT BIOS 
   setup applications.

 * The 7080A is shipped with J17-J20 jumered and the 7040A is shipped 
   with J18-J20 jumpered to operate as single AT IDE drives. J20 and J19 
   control master/slave operation.
 
 7080A / 7040A Jumper Designation
 ------------------------------------------------------------------------
 Jumper   |               21111    1111  |  J3 1 +12V DC      J7 1 +5V
 Position |               09876    5431  |     2 +12V Ground     2 +12V
          |                              |     3 +5V Ground      3 Ground
 Pins     +[4321]--[1            ]--[321]+     4 +5V DC
         J3 Power     Data Cable   J7 Power

 J20 J19  Master/Slave Select    (*) Single Drive   closed, closed
                                     Master (Dual)  closed, open
                                     Slave (Dual)   open, closed
 J18      ECC Bytes              (*) closed 4 Bytes / open 7 Bytes
 J17      Drive Model                open 7040A / closed 7080A
 J16      Idle Mode Latch        (*) open disabled / closed enabled
 J15      Reserved for Factory   (*) open normal / closed factory
 J11      I/O Channel Ready      (*) open disabled  /  closed enabled
 J14 J13  Default Configuration at Power Up
          Cyls  Heads  SpT  MB     J14     J13     (J17)
 40MB (*)  981    5    17   40.7   open    open    open 
           524    4    40   40.9   open    closed  open
 80MB (*)  981   10    17   81.4   open    open    closed
           832    6    33   80.4   open    closed  closed
          1024    9    17   76.5   closed  open    closed
 (60MB)    762    4    39   58.0   closed  closed  closed       
 ------------------------------------------------------------------------
 (*) = Default      Note:  A spare jumper is supplied across J13 and J14.



>I have a 7131AT maxtor in my machine and setup info as follows:
>
>                1002 cylinders
>                8 heads
>                32 sectors
>                0 precomp
>                1002 LZ
>

********************* MICROPOLIS Micropolis micropolis ***********************


Drive		2105A		2112A
----------------------------------------
Unformatted MB	647		1220
Formatted MB	560		1050
Platters	5		8
Heads		8		15
Cylinders	1760		1760
----------------------------------------

Performance (both):

	Track to track (read)		1.5 msec
	Track to track (write)		2.5 msec
	Average				10 msec
	Max				25 msec
	Avg Rotational Latency		5.56 msec
	Rotational speed		5400 rpm (+/- 5%)
	Data Transfer Rate		upto 5Mbytes/sec
	Internal data rate		24-40 Mbits/sec

BIOS Settings:

2105A		1084 cyl	16 heads	63 sectors
2112A*	master	1024 cyl	16 heads	63 sectors
	slave	1010 cyl	16 heads	63 sectors
		
* the 2112A emulates both master and slave


Jumpers (labelled J6 on the drive)

	----
	|oo| W1\ only these 2 are used
	|oo| W2/
	|oo|
	|oo|
	|oo|
	----

	W2	W1
	--	--
	in	in	2112A only - drive emulates both master + slave
	in	out	Drive is master, slave is present
	out	in	Drive is slave
	out	out	Drive is master, no slave present (ie single drive)


*****************   MICROSCIENCE Microscience microscience   *****************

MicroScience 

Model: 7100-00
Heads: 7
Cylinders: 855
S/T: 35 (?)
Size: 105M


Model # 8040-00.
Size 40M  5hd/17sec/977cyl

Model	# cyls	# heads	spt	lz	precomp		cap (formatted)
7070-20	960	5	35	960	960		86 MB
7100-00	855	7	35	855	855		107 MB
7100-20	960	7	35	960	960		120 MB
8040	1024	2	40	1024	1024		41 MB

(NOTE: I have no jumper information on the model 8040)
On the 7xxx series the jumper pins are bent parallel to the board. When 
they are pointing toward you #1 is on the left, there are 8 altogether.

single drive		all open
master drive		1-2 shorted
slave drive		7-8 shorted


***************   MINISCRIBE Miniscribe miniscribe    ************************

Miniscribe

MODEL   AT               CAP   CYC  H  RWC  WPC ENC  RATE ACCESS  SPT COMMENTS 
8225AT            3.5"    21   745  2  -    -        8    28 MS    28
8051AT            3.5"    42   745  4  -    -        8    28 MS    28
8450AT            3.5"    42   745  4  -    -        8    40 MS    28

Master(2):  5-6
Slave(2):   1-2
Single:     1-3 (shunt storage)


***************************   NEC Nec nec   *********************************

NEC     D3735,  40 MB
BIOS:	Cyl 537     Head 4	sect 41

NEC	D3755,	105 MB
BIOS:	Cyl 625     Head 8	sect 41

NEC	D3756, 105 MB
BIOS:	Cyl 1005    Head 12	sect 17

NEC	D3741,	44 MB
BIOS:	Cyl 423	    Head 8	sect 26		WPcom 0		LZone 424
 

Jumper	JP12	JP13	    (for all above NEC drives)
Single  0       0
Master	1	0
Slave   1       1

There have been reported difficulties in using WD Caviar as Master and
NEC drives as slave - the other way it works.



************************  QUANTUM Quantum quantum   *************************

Logical Specs for Quantum AT Drives
COMPLIMENTS OF COMPUTER BROKERS OF CANADA


Model       Cap     Avg Acc	Cylinders     Heads    Sectors/Track
            (MB)     (ms)

40AT        42        19           965          5            17
80AT        84        19           965         10            17
120AT       120       15           814          9            32
170AT       168       15           968         10            34
210AT       209       15           873         13            36
425AT       426       14          1021         16            51
LPS  52AT   52        17           751          8            17
LPS  80AT   83        17           611         16            17
LPS 105AT   105       17           755         16            17
LPS 120AT   122       16           901          5            53
LPS 170AT   160       15	   968	       10	     34
LPS 240AT   245       16           723         13            51
LPS 540A    see below

=================================================
Legend:  1=Jumper Installed  0=No Jumper
=================================================

40 & 80 AT Jumpers

DS  SS   Meaning
1   0    Single drive configuration
1   1    Master of dual drive
0   0    Slave of dual drive
0   1    Self-Seek Test

=======================================================

120, 170, 210 & 425 AT Jumpers

DS  SP  SS   Meaning
0   0   0    Slave when the Master is Quantum PRODRIVE other than 40/80A
0   0   1    Slave in PRODRIVE 40/80A mode
0   1   0    Slave when Master is non Quantum Drive
0   1   1    Not Used
1   0   1    Master drive PDIAG mode checking DASP for slave
1   1   0    Master in PDIAG mode using SP to check if slave present
1   1   1    Master in 40/80A mode using SP to check if slave present
1   0   0    Single drive

=======================================================

LPS 52, 80, 105, 120, 170 & 240 AT Jumpers
DS  SP  DM*  Meaning
0   0   0    Slave in standard PDIAG mode for compatibility with drives that use
             PDIAG-line to handle Master/Slave communications
0   0   1    Slave in PRODRIVE 40/80A mode compat. without using PDIAG line
0   1   0    Self Test
0   1   1    Self Test
1   0   0    Master in PDIAG mode using DASP to check for Slave
1   0   1    Master in 40/80A Mode using DASP to check for Slave
1   1   0    Master in PDIAG mode using SP to check for Slave without
             checking DASP
1   1   1    Master in 40/80A mode using SP to check for Slave without
             checking DASP


======================================================================
* While my Spec form marked the jumper name DM, it is labeled as CS on
  my LPS 240AT drive.

Quantum LPS540A:
1120 cyl.    16 hds.     59 sec/trck    541MB
1024 cyl.    16 hds.     63 sec/trck    528MB

The second option is for those that will use the drive under DOS (1024 limit
without driver support).

9-12ms avg. access time
ECC Reed Solomon, 4,500 rpm, local bus support, fast multiword DMA, 128k cache
(of this 32k is used by firmware), read/write caching.


The QUANTUM ELS series:

Model       Cap     Avg Acc     Cylinders     Heads    Sectors/Track
            (MB)     (ms)
 
ELS42AT        42        -           968          5             17
ELS85AT        85        -           977          10            17
ELS127AT       127       -           919          16            17
ELS170AT       170       -           1011         15            22

Write precomp = 0 for all Quantum drives ( probably no significance)
Landing Zone = Cylinders

Straps: If an ELS drive is 
	master only, use DS
	master with slave, DS or, DS and SP in some cases
	slave, no strap


*********************	RODIME Rodime rodime   ******************************

Information for RO 3008A and RO 3009A series hard disk drives:

Drive Types

   Model	Cyls	Hds	Sectors/Trk	 No. blocks	Formatted Cap.
  -------	----	---	-----------	 ----------	--------------
  RO3058A	868	 3	    34		   88,536	 45.33 MByets
  RO3088A	868	 5	    34		  147,560	 75.55 MByets
  RO3095A	923	 5	    34		  156,910	 80.33 MByets
  RO3128A	868	 7	    34		  206,584	105.77 MByets
  RO3135A	923	 7	    34		  219,674	112.47 MByets
 
  RO3059A	217	15	    28		   91,158	 46.67 MByets
  RO3089A	325	15	    28		  136,737	 70.00 MByets
  RO3129A	492	15	    28		  206,645	105.80 MByets
  RO3139A	523	15	    28		  219,735	112.50 MByets
  RO3209A	759	15	    28		  319,053	163.35 MByets
  RO3259A	976	15	    28		  410,211	210.02 MByets


Link Options

   In order to install the Rodime Ro 3000A series drives the dumpers for 
the single/dual drive and LED operation on the drive need to be set as 
described in the relevant product specification.
   I a single drive environment the drive is described as a Master.
   In a dual drive environment the drives are described as a Master and a
Slave. This is due to the protocal the takes place between the two drives 
when performing diagnostics.
   There are four links, LK1, LK2, LK4 and LK5, adjacent to the 40 way 
interface connector. They have the following functions and are described 
in order as viewed from the end of the drive, with the first jumper 
described nearest the 40 way interface connector.

LK2: LED 
     When fitted, this jumper connects the LED drive to pin 39 of the
     interface. This allows a LED to be connected to the interface. An
     external current limiting resistor needs to be fitted in series with
     the LED when this option is selected. The value of the resistor will
     be dependant on the LED type chosen but will be in the range of 130
     Ohms ot 220 Ohms.

LK1: Dual Drives
     This jumper must be fitted when two drives are attached to a single
     bus. It fallows communication across the 40 way interface connector,
     indicating, to the Master drive, the presence of a Slave.

LK4: Master
     When fitted this signifies that the drive jumpered is a Master. If
     there are two drives connected on a single bus then only one may be
     jumpered in this way.

LK5: IOChRdy
     When fitted this connects the IOChRdy signal to the drive, it is 
     fitted when the drive is used in host systems that have a higher
     data transfer rate than the drive i.e. greater than 4 MBytes per
     second when using 1:1 interleave. This jumper is not normally 
     fitted as most hosts transfer at a lower rate than 4 MBytes per
     second.

   There are four possible Master/Slave configurations in which a drive(s)
may be jumpered:

     Master, single drive with LED on interface		LK2 & LK4 fitted.
     Master, single drive without LED on interface	LK4 only fitted.
     Master, dual drive without LED on interface	LK4 & LK1 fitted.
     Slave, dual drive without LED on interface		No jumpers fitted.
     Master, dual drive with LED on interface		LK4, LK1 & LK2 fitted.
     Slave, dual drive with LED on interface		LK2 only fitted.

   The Master drive will delay power-up for approximately two seconds to
reduce power surges in applications where dual drives are used.

   The other connections for a LED will be found close to the 28 way 
connector at the other end of the drive. This LED driver is not affected
by the link options. An internal current limiting resistor is on the 
drive for this LED driver. Refer to the product specification for further
details.


*************************** SAMSUNG Samsung samsung  *************************

            CYL   hd  Sectors
SHD-3101A   776    8    33        (100 MB)  (MB = 1024 bytes)
SHD-3061A   977    7    17        (56.76 MB)
SHD-3062A   917   15    17        (114 MB)

for drive SHD-3101A, SHD-3061A and SHD-3062A

                             2 drives
Jumper     1 drive      Master       Slave
C/D           J           J            NJ
DSP          NJ           J            NJ
ACT           J          (1)           (1)
HSP          NJ          NJ            (2)
                       J = Jumpered
                      NJ = No Jumpered

(1) In a two-drive system,it is possible to drive one LED
    with both drives. An external current limiting resister is required

(2) If the drive is connected to a host that requires that the - DIRVE SLAVE
    PRESENT be supplied from the slave drive via the interface signal -
    HOST SLV/ACT, then this jumper must be installed, the ACT jumper must
    not be installed because the two jumpers are mutually exclusive



***************************  SEAGATE Seagate seagate  *************************

There is a list of most Seagate HD (including MFM, SCSI, ESDIand IDE) on
every Simtel mirror under

/msdos/dskutl/1seagate.zip

It contains info about the following drives:

	    st1144a	st138a	    st274a	st3283a
st1057a     st1156a	st1400a     st280a	st351ax
st1090a     st1162a	st1401a     st3051a	st9051a
st1102a     st1186a	st1480a     st3096a	st9077a
st1111a     st1201a	st157a	    st3120a	st9096a
st1126a     st1239a	st2274a     st3144a	st9144a
st1133a     st125a	st2383a     st325ax

additional info:

ST3243A     204 MB	Cyl/Hd/spt  1024/12/34
ST351AX     41	MB		    820/6/17
ST9235A     200 MB		    985/13/32

and also...

pd1:<msdos.info>	(on SIMTEL mirrors)
1SGATHTX.ZIP    Seagate tech support's disk ref (needs HHV20)

This is a concise and complete source of information for all hard disks
that Seagate makes, including MFM, RLL, IDE, and SCSI types.  This
information includes:

        Detailed technical specifications for each drive
        Switch and Jumper settings for each drive (more than just settings
                for BIOSs and low--level formatting routines)
        Miscellaneous notes about each drive

This is the most up-to-date information that Seagate provides on its BBS.
It is dated 05/14/93.

This file is a hypertext version of file 1SEAGATE.ZIP and requires
HHV20.ZIP to view it.


*******************   TEAC Teac teac  ********************

Model: SD-3105

                Cyls.   Heads   Sect/T  PreCmp  LZone   Capacity
                ------  ------  ------  ------  ------  ---------
Physical         1282       4      40       -       -   105021440
BIOS (AMI)        641       8      40       0       0   105021440 (100.2M)
     (Award)      926      13      17       0       0   104778752  (99.9M)
     (Phoenix)    776       8      33       0       0   104890368 (100.0M)

Connectors and Jumpers:

   +----+                    1           Jumper  Function
   |....| +---+ +-------/ /---+   2 0       0    ON:  -ACT selected (ext.LED)
   |    | |...| |::::::/ /::::|  ::::            OFF: -SLV PRESENT selected
   +----+ +---+ +-----/ /-----+  3 1        1    ON:  Two HDD's
     J2     J7  40    J1         ----            OFF: Single HDD
   Power (Power)    Signal      Jumpers     2    ON:  Master (/Single)
                                                 OFF: Slave (with 2 units used)
                                            3    ON:  -I/O CH RDY not output
                                                 OFF: -I/O CH RDY is output
Master Slave Settings:

Jumper no.:   1     2
-----------------------
Single....:   0     1                            1, ON  = jumpered
Master....:   1     1                            0, OFF = not jumpered
Slave.....:   1     0


*********************	TOSHIBA Toshiba toshiba   ***************************

		    cap     Cyl     Hd	    spt
MK1122FC	    41	    977     2	    43
MK2024FC	    82	    977     4	    43
MK2124FC	    124     934     16	    17
MK2224FC	    203     684     16	    38
MK234FCH	    101     845     7	    35

Toshiba MK 234FCF.  
	845	Cyl
	7	Head
	0	Pre
	845	LZ
	35	Sectors
	101	Size
The jumpers settings I got from Toshiba.  They refer to 
connector PJ10, the 1st being the pair of pins closet to the
outside of the drive and the 6th being the pair closest to
center of the drive.  
	configuration		jumpers on
	------------		----------
	single drive		1st and 3rd
	master w/ slave		1st, 3rd, and 4th
	slave			1st


**************** WESTERN DIGITAL Western Digital western digital **************

Caviar series:

Name        Size (Mb)    Cylinders   Heads   Sectors
----------------------------------------------------
WDAC140      40.7         980            5        17
WDAC280      81.3         980           10        17
WDAC1170    163 	 1010		 6	  55
WDAC2120    119.0        1024           14        17
WDAC2170    162.7        1010            6        55
WDAC2200    202.8         989           12        35
WDAC2250    244 	 1010		 9	  55
WDAC2340    325.4        1010           12        55
WDAC2420    405.6         989           15        56


> My 1st HD was a Quantum (LPS) 105AT (I assume th LPS, as I haven't any 
> docs.) 
> >LPS 105AT   105       17           755         16            17
> The second was a Western Digital Caviar 340Mb:
> >WDAC2340    325.4        1010           12        55
> Using the information from your document, I set up the Quantum as master
> and the WDC as slave. This worked fine most of the time, but when booting
> sometimes HDD-controller errors occured. When I switched the drives (WDC
> as master, Quantum as slave) it worked perfectly, as has done ever since.

Manufacturer: Western Digital
Serie:        Caviar
Name:         WDAC2420
Size(Mb):     405.6
Cylinders:    989
Heads:        15
Sectors:      56
(uses dynamic translation)
Jumpers:      CP MA SL

The drive runs as a slave with a WDAC2200 as master just fine.


Please note that these are the *recommended* CMOS parameters. All the disks 
support so-called dynamic translation, and should thus be able to work with
any parameters having fewer sectors than the total number of sectors on
the disk.

Now, according to the manual, the jumper settings are as follows:

Jumper                               CP   MA   SL
-------------------------------------------------
Single                                0    0    0
Master                                0    1    0
Slave                                 0    0    1
Slave with Conner CP342 or CP3022     1    0    1   


Maybe there are 2 kinds of Caviar's floating around: 

If your jumpers read MA SL and SI then use:
Jumper	SI	MA	SL
Single	1	0	0
Master	0	1	0
Slave	0	0	1

There have been reported difficulties in using WD Caviar as Master and
NEC drives as slave - the other way it works.
> When I installed a Conner CP3204F (203 MB) as master and a WD Caviar 2200
> (203 MB) as slave, both with and without the "CP" jumper, the Caviar had
> seemingly normal behaviour. However, when doing writes to the Caviar, once
> in a while it would overwrite directories etc. Using FASTBACK was almost
> impossible.
> 
> The workaround is to install the Caviar as the master, and the Conner
> as the slave.


> I had a WD pirana 4200 (212 mb) IDE drive and added a Caviar 2340 (341 mb)
> drive.  No matter what I did with the CMOS settings, as soon as I define
> the D drive (as anything) and rebooted, it would hang for about 2 minutes
> and then report "D: drive failure".  I am using an intelligent IDE controller
> since my AMI bios was too old to support IDE drives.
> 
> The fix was to call the 4200 the slave and the 2340 the master.
> All has been working fine since then.


WD93044-A  (40 MB)
BIOS-Settings 
977 cyln, 5 heads, 17 sect, LZone: 977 

+-------+ +---+---+---+  1: drive is master
| cable | | 1 | 2 | 3 |  2: drive is slave
+-------+ +---+---+---+  3: second drive is a conner-drive

No jumper set: this is the only drive.

--

WD93048-A
40 MB
Cyl 782
Heads 4
s/track 27

Jumper not known; try settings for WD93044-A

--

WDAH260     60MB    Cyl/Hd/spt	    1024 7 17
WDAH280     82MB		    980 10 17

WDAP4200    202MB		    987 12 35



********************  Useful telephone numbers...  ********************

Conner:
  BBS: 408-456-4415
  Talk info: 1-800-426-6637
  FaxBack: 408-456-4903

The "Talk info" number above is now a Fax-on-demand system.  Very nice,
considering both the incoming call and outgoing fax are paid for by them!
You can also speak with a human for technical assistance at this number.

	(Conner Europe (in UK)  ;  +44 628 777277 (voice)
				   +44 628 592801 (fax))
Miniscribe:     
  303-651-6000

Maxtor:
  Info/tech support: 800-262-9867
  FAX-back: 303-678-2618
  BBS: 303-678-2222
  They list their 800 number as 1(800)2-MAXTOR.

Quantum:
  408-894-4000
  408-944-0410 (Support)
  408-894-3218 (FAX)
  408-894-3214 (BBS)

Seagate:
  Info/tech support: 408-438-8222
  FAX-back: 408-438-2620
  BBS: 408-438-8771

Western Digital:
  Info/tech support: 714-932-4900
  BBS:
  U.S. 1200/2400    714-753-1234
  U.S. 9600         714-753-1068
  France 1200/2400  ..-331-69-85-3914 (? French code is 33 not 331)
  Germany 1200/2400 ..-49-89-922006-60
  U.K.  1200/2400   ..-44-372-360387

The US Toll free number for Western Digital tech support is
800-832-4778


*******************   last but not least   *****************

If I could help you with my little collection and if you live in a
part of the world far away from me, how about a postcard for my pinboard?
I will surely answer!

Carsten Grammes			
Saarbruecker Str. 47
D-66292 Riegelsberg
Germany


S) 5.0 >Video

This section is posted separately as the "comp.sys.ibm.pc.hardware.video
FAQ" and "comp.sys.ibm.pc.hardware.video Chipsets List" and archived
along side this FAQ.  Refer to section one for instructions on
retrieving these files.

Newsgroups: comp.sys.ibm.pc.hardware.video
Subject: comp.sys.ibm.pc.hardware.video FAQ, Part * / *
From: scott@bme.ri.ccf.org (Michael Scott)
Summary: This is a monthly posting containing a list of Frequently
         Asked Questions (and their answers) pertaining to video
         hardware for IBM PC clones.  It should be read by anyone who
         wishes to post to the comp.sys.ibm.pc.hardware.video
         newsgroup.
Archive-name: pc-hardware-faq/video/part*
URL: http://www.heartlab.rri.uwo.ca/videofaq.html
                                ---
Newsgroups: comp.sys.ibm.pc.hardware.video
Subject: comp.sys.ibm.pc.hardware.video Chipsets List
From: scott@bme.ri.ccf.org (Michael Scott)
Summary: This document is distributed with the comp.sys.ibm.pc.hardware.video
         FAQ and contains information on video chipsets and specific video
         card models.
Archive-name: pc-hardware-faq/video/chipsets
URL: http://www.heartlab.rri.uwo.ca/videofaq.html
 
S) 6.0 Systems

Q) 6.1  *What should I upgrade first?

Q) 6.2  Do I need a CPU fan / heat sink

[From: jruchak@mtmis1.mis.semi.harris.com (John Anthony Ruchak)]

This is highly debatable.  In general, if you buy from a good,
self-respecting company, any additional cooling requirements would
have been taken care of before your system was delivered to you.
 
I'm responsible for PC maintenance at my site, and I don't worry about
additional cooling in any of the pre-packaged systems we receive.  All
rebuilt and/or upgraded 486-33 (or higher) systems do, however,
receive additional cooling because older cases may not provide
adequate ventilation for today's technology.  Additional cooling on
the infamously-hot Pentium (586) is always added.

So, do YOU need a CPU fan in YOUR system?  Probably not for "ready to
run out of the box systems."  If you are _REALLY_ worried that your
system is suffering from too much heat, consult with a reputable
service center.  They will not only answer your questions, but they
can also install any additional cooling systems that may be needed.  A
good rule of thumb, though - "don't try to fix what isn't broken."
In other words, if your system is working, don't look for trouble.

Q) 6.3  What does the turbo switch do?

[From: cls@truffula.sj.ca.us (Cameron L. Spitzer)]

It slows your system down so you can play games that were written
with timing mechanisms based on CPU execution rate.  I know of three
implementations:
1.  A programmable divider delivers the clock signal at two different
    speeds.
2.  Extra wait states are inserted in all memory cycles.
3.  Dummy DMA cycles or extra referesh cycles are inserted.
The first is by far the most common.

Q) 6.4  How does the front panel LED display measure the system's speed?

It doesn't.  The only useful information going to these displays is if
you are in turbo mode.  They have jumpers or dials behind the display
which you can use to set them to show any two arbitrary numbers (for
turbo and non-turbo modes).

Q) 6.5  Should I turn my computer/monitor off?

Turning a device on/off causes thermal stress.  Leaving it on causes
wear and tear (even on non moving parts).  The only thing you
shouldn't do is quickly power cycle the computer.  If you turn it
on/off, leave it that way for at least a few seconds.  Other than
that, it's up to you.

Q) 6.6  Are there any manufacturers/distributers who read the net?

Yes, it is known that Zeos, Gateway 2000, Dell, Adaptec, HP and others
all read the net to some extent.  However, for best results, use the
support phone numbers.


===============
Ralph Valentino  (ralf@worcester.com) (ralf@alum.wpi.edu) 
Senior Design Engineer, Instrinsix Corp.

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Last Update March 27 2014 @ 02:12 PM