Using FreeDOS to flash BIOS

Posted Oct 15, 2009 11:01 UTC (Thu) by tajyrink (subscriber, #2750)
In reply to: Quotes of the week (Linus special) by dlang
Parent article: Quotes of the week (Linus special)

And I think the guide to doing that is far too hidden, even though it's dead simple in the end.

In GRUB:
title DosFlashDisk
kernel /dos/memdisk
initrd /dos/myimage.img

(just /boot/dos subdirectory on your hard disk)

where memdisk is /usr/lib/syslinux/memdisk from syslinux package in a few distros and somewhere similar in others, and imagefile.img is eg. the single disk FreeDOS linked to from http://www.freedos.org/freedos/files/

You can mount the .img with mount -o loop /boot/dos/myimage.img /mnt, copy the flasher .exe + new BIOS there, then unmount and boot the computer to DosFlashDisk from GRUB menu.

Nowadays I should learn GRUB2, though...