Don't know to answer direcly your question, but know another way to boot
freedos with grub4dos from any partition and to boot linux from under
freedos with the same grub4dos. The last is what use every day.
If the first partition (possible in an USB as well), you install freedos in
the usual way, then run grub with grub.exe and grldr and write your options
to load linux from the second (or other) partition (or drive). Only freedos
must be in the low memory. If something is over 640 kb, grub will hung.
One can also install grub4dos into MBR and simply copy kernel
command.cometc on any partition you want and write your options to
load any thing you
want, freedos as well. first partition of the first drive will be (hd0,0)
second partition of the second drive - (hd1,1) etc. this is root.
chainloader /kernel.sys - this is the command. boot.
Only not sure this will be a "correct" DOS, not a specialist :)
2012/3/26 Lee Eric <openlinuxsou...@gmail.com>
> Hi all,
>
> I'm going to create an USB flash disk. Here's the partition structure.
>
> Device Boot Start End Blocks Id System
> /dev/sdb1 * 1 537911 268955+ 83 Linux
> /dev/sdb2 537912 1598793 530441 c W95 FAT32 (LBA)
>
> /dev/sdb1 I used for installing boot loader(syslinux) and other small
> standalone utilities. /dev/sdb2 is used for FreeDOS and I have copied
> necessary files to the partition. Here's my syslinux.cfg in /dev/sdb1.
>
> UI menu.c32
> TIMEOUT 300
> default localboot
>
> MENU TITLE System Rescue Flash Disk
>
> LABEL memtest
> MENU LABEL Memtest86+ (4.20)
> KERNEL memtest
>
> LABEL freedos
> MENU LABEL FreeDOS 1.1
> COM32 chain.c32
> APPEND hd0 2 freedos=KERNEL.SYS
>
> LABEL reboot
> MENU LABEL Cold Reboot
> COM32 reboot.c32
>
> LABEL local
> MENU LABEL Boot from local hard drive
> LOCALBOOT 0x80
>
> But when select freedos label it reports "Failed to load the boot
> file". I remember that FreeDOS can be installed on other partitions.
>
> Can anyone tell me how to fix that?
>
> Thanks.
>
> Eric
>
>
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