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None, you can however create a bootable grub floppy.
This is kinda of old, but still may work, a little updating might be needed;
Create GRUB boot floppy:
[root prompt]# fdformat /dev/fd0H1440
[root prompt]# mke2fs /dev/fd0
[root prompt]# mount -t ext2 /dev/fd0 /mnt/floppy
[root prompt]# grub-install --root-directory=/mnt/floppy '(fd0)'
[root prompt]# cp /boot/grub/grub.conf /mnt/floppy/boot/grub/grub.conf
[root prompt]# umount /mnt/floppy
You can make a GRUB boot floppy as root by;
# fdformat /dev/fd0H1440
# mke2fs /dev/fd0
Note; You can use a blank formatted DOS floppy and skip the two steps
above. You will lose the added security of the ext2 filesystem using this
type of floppy.
# mount -t ext2 /dev/fd0 /mnt/floppy
# grub-install --root-directory=/mnt/floppy /dev/fd0
# cp /boot/grub/grub.conf /mnt/floppy/boot/grub/grub.conf
# umount /mnt/floppy
When you update the kernel all you need to do is mount the floppy and copy the updated /boot/grub/grub.conf to the floppy. Or you can edit the
/mnt/floppy/boot/grub/grub.conf by hand (good idea if you have a custom
multiple system GRUB boot floppy) if you want.
Anything wrong with making a bootable CD using mkbootdisk???
# mkbootdisk --device boot.iso --iso `uname -r`
You will get an error that can be safely ignored.
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