On Sat, Aug 24, 2013 at 8:10 PM, Beeblebrox <zaphod@berentweb.com> wrote:
I want to update system BIOS using USB Flash. The USB drive has grub2 installed, I use it as a rescue drive & I can add menu items however I like.
I am able to boot into FreeDOS from grub2 this way:
    linux16 (hd0,1)/boot/memdisk raw
    linux16 (hd0,1)/boot/FDOEM.144
When I boot into FreeDOS, only the contents of the mem-loaded image file
(FDOEM.144) are visible. All the tutorials I have found confirm this
behaviour by instructions to add BIOS-update-files into the FDOEM.144 file,
so that the BIOS update files become available in the memory-file
environment.
MY QUESTION: Would it be possible to provide access from the FreeDOS
mem-file environment to a folder on the USB drive? This way, one would boot into FreeDOS from grub2, chdir to the folder route defined in the FreeDOS config.sys (?) and run the dos-biosupdate.exe. If this is possible, one would just copy the BIOS files into the defined folder and be done with it. Instead, with current definitions one mnust loop-mount FDOEM.144, copy the BIOS files into a sub-folder, unmount FDOEM.144 and copy it to the USB drive.