2.3. Construction

2.3.1. Prepare the boot disk floppy

Insert a blank diskette labeled "boot disk".

bash# mke2fs -m0 /dev/fd0 bash# mount /dev/fd0 /mnt

2.3.2. Build the kernel

bash# cd /usr/src/linux bash# make menuconfig

Be sure to configure support for the following:

• 386 processor

• Floppy disk

• RAM disk

• Console on virtual terminal

bash# make dep bash# make clean bash# make bzImage

2.3.3. Copy the kernel to diskette

bash# mkdir /mnt/boot bash# cp /usr/src/linux/arch/i386/boot/bzImage /mnt/boot/vmlinuz

2.3.4. Copy the LILO boot loader

bash# cp /boot/boot.b /mnt/boot/boot.b

2.3.5. Create device files that LILO needs

bash# mkdir /mnt/dev bash# cd /mnt/dev bash# mknod fd0 b 2 0 bash# mknod console c 5 1

2.3.6. Write a simple lilo.conf

bash# mkdir /mnt/etc bash# cd /mnt/etc

Use an editor like vi, emacs or pico to create the following lilo.conf file:

# /etc/lilo.conf - boot loader configuration file # boot=/dev/fd0 compact prompt read-only vga=normal image=/boot/vmlinuz label=bootdisk append="load_ramdisk=1 prompt_ramdisk=1" root=/dev/fd0 # # end of /etc/lilo.conf

2.3.7. Install the LILO boot loader

bash# lilo -r /mnt

2.3.8. Unmount the boot disk

bash# cd / bash# umount /mnt bash# sync

2.3.9. Prepare the root disk floppy

Insert a blank diskette labeled "root disk".

bash# mke2fs -m0 /dev/fd0 bash# mount /dev/fd0 /mnt

2.3.10. Build BASH

Get the bash-2.05 source code package from ftp://ftp.gnu.org/gnu/bash/ and untar it into the /usr/src directory.

BASH version 2.05b, the latest version at the time of this writing, will not build successfully when using the --enable-minimal-config option. This leaves two choices. We can either fix 2.05b by applying the patch posted on gnu.bash.bug under the subject, "Compile error in execute_cmd.c with --enable-minimal-config" or we can simply use the 2.05a version.

bash# cd /usr/src/bash-2.05a bash# ./configure --enable-static-link \ --enable-minimal-config --host=i386-pc-linux-gnu bash# make bash# strip bash

2.3.11. Copy BASH to the root disk

bash# mkdir /mnt/bin bash# cp bash /mnt/bin/bash bash# ln -s bash /mnt/bin/sh

2.3.12. Create device files that BASH needs

bash# mkdir /mnt/dev bash# mknod /mnt/dev/console c 5 1

2.3.13. Unmount the root disk

bash# cd / bash# umount /mnt bash# sync