Top Document: Win95 FAQ Part 11 of 14: Disk Compression Previous Document: 11.8. How do I start my computer WITHOUT loading the DriveSpace driver? Next Document: 11.10. Top ten mistakes using disk compression See reader questions & answers on this topic! - Help others by sharing your knowledge DriveSpace works best in Win95 if you have lots of RAM (16 MB), have lots of extra computing power ('DX2-66es are quite adequate for this), and some external SRAM for processor caching (256 KB is best). The CPU has to work harder to interpret compressed data, but it has to wait less time to actually get it. This is the trade-off. To speed compressed drives up, install DriveSpace 3 (in MS Plus!), and set compression to "none", or "none, unless it is xx% full, then use Standard". You still get the benefits of reduced cluster sizes even though you aren't compressing data. Later on, you can use Compression Agent to compress the drive overnight, or any other time you aren't using the computer. If you use DriveSpace 3 on a '486 class computer, do not use HiPack as the default file format. There's a reason MS didn't recommend that. Maybe even set compression to "None" and use Compression Agent to re-compress overnight, using HiPack then. HiPack takes less time to read than to write. Also, when using Compression Agent, DO NOT USE UltraPack! UltraPack is very, very, slow on '486 machines. I wouldn't even recommend it for Pentium machines slower than 100 MHz. If you're too cheap to buy MS Plus, simply make sure your swap file isn't on the compressed drive, and it's set to a fixed size. Do this from System Properties/Performance/Virtual Memory. Win95 doesn't actually compress the swap file, but it does go through the DriveSpace driver to access it. Move it to an uncompressed drive to remove that extra layer of protocol. Finally, make sure you have NO real mode disk drivers to handle CD-ROMs, etc, that might be sitting on the hard drive adapters. The Win95 disk driver can't load then, and it won't use the Win95 DriveSpace driver either. * 11.9.1. Basic DriveSpace 3 advice; regular, HiPack, UltraPack, Compression Agent DriveSpace 3 makes more drive space by compressing files tighter. It does so using Compression Agent, which gets automatically scheduled in System Agent when you install MS Plus. Run DriveSpace 3, select the compressed drive, then select Advanced/Settings. This selects how DriveSpace writes data to the compressed drive on the fly. As MS recommends, don't use HiPack on '486 class computers. I won't even use it on Pentium-75s. "Standard" is best for all '486 machines or better, though a slow '486 can benefit from the "None until..." setting. Use "None" on all '386 class machines. Now, DriveSpace 3 can uncompress data faster than it can compress it, so it makes sense to try to re-compress the drive during idle moments, like overnight. Compression Agent does this. Either in System Agent, or in Accessories/System Tools, run Compression Agent and hit its Settings button. For Pentiums faster than 100 MHz, you could try UltraPack, but I doubt you'll get a whole lot of extra disk space from it. All '486 systems can benefit by completely turning off UltraPack and specifying HiPack for the rest of the files (basically meaning "All of them".) Generally, reading back HiPacked files is quick, so you can specify that for even '386 class machines, but if you really can't handle the decrease in speed, use "Store them uncompressed". A re-compression run does take a LONG time, so do it overnight. Use System Agent to schedule re-compression, say, once a month, and schedule a thorough disk scan about an hour before Compression Agent runs. A Defrag after Compression Agent wouldn't hurt, but schedule it for a LONG TIME after Compression Agent. * 11.9.2. Why on slow computers, you should use "No compression" and still use DriveSpace 3 It handles bigger hard drives (compressed volumes larger than 512 MB) It reduces wasted disk space (for files smaller than 512 bytes, it only occupies 512 bytes, regardless of logical cluster size) It won't eat CPU time if you turn compression off User Contributions:Comment about this article, ask questions, or add new information about this topic:Top Document: Win95 FAQ Part 11 of 14: Disk Compression Previous Document: 11.8. How do I start my computer WITHOUT loading the DriveSpace driver? Next Document: 11.10. Top ten mistakes using disk compression Part1 - Part2 - Part3 - Part4 - Part5 - Part6 - Part7 - Part8 - Part9 - Part10 - Part11 - Part12 - Part13 - Part14 - Single Page [ Usenet FAQs | Web FAQs | Documents | RFC Index ] Send corrections/additions to the FAQ Maintainer: gordonf@intouch.bc.ca
Last Update March 27 2014 @ 02:12 PM
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Districts. Sirajgonj
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And rfcs link workings locks and blocking
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