В Wed, 28 Aug 2013 12:04:31 +0300
Beeblebrox <zap...@berentweb.com> пишет:
> 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)
>
If I understand correctly what you are trying to do, the following
should work:
http://sourceforge.net/apps/mediawiki/freedos/index.php?title=USB
It describes how to create bootable FreeDOS USB stick using grub
legacy which should be trivially extrapolated to grub2.
> 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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