I would like to know if the following is possible:
* USB thumb drive has grub-1.98 on hd(0,1) gpt layout (boot-bios is hd0,2)
* hd(0,1)/boot/freedos has files
autoexec.bat, command.com, config.sys, kernel.sys, sys.com
Un-tarred from freedos FDOEM.144 and copied into folder
* Boot into USB drive's grub2 boot menu and try to boot freedos by:
menuentry "DOS kernel" {
root=UUID=8D40-EC8D
chainloader --ebx=0x0180 (hd0,1)/boot/freedos/kernel.sys
boot }
gives err msg: "wrong signature". Probably expected, since files being
booted are for a "virtual floppy", but I also tried it with the files from
ke386f32 .zip as well.
Q: Is what I'm trying to do possible?
I don't want to boot into a ram-limited 1.44 or 2.88 virtual floppy. My
purpose for this is to be able to make mobo BIOS-updates (place BIOS
dosflash.exe + bios.rom files on USB drive, boot into grub2 -> chainload to
dos, mount thumbdrive in dos to make files visible, run dosflash.exe)
I asked this question on the freedos mail list, but they could not help
much because of insufficient grub2 expertise. The feasibility of the
concept is described here:
http://www.novell.com/coolsolutions/feature/3612.html
I would appreciate some help on how to get this done, or if someone has
ideas on how to flash the BIOS using the grub2 menu, that would also work.
Regards.
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