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On Sat, Dec 7, 2013 at 5:53 PM, Tom Metro <tmetro+blu at gmail.com> wrote: > I was updating the BIOS on a 2007-era motherboard yesterday. >.... > Plan B was to use the vendor supplied flash utility that runs under DOS. > (Of course they also provide a Windows flashing tool but I wasn't about > to install Windows (or find a live CD) just to update the BIOS.) >.... > > I found a simple guide for setting up a FreeDOS bootable USB Flash drive: > http://www.chavers.us/robs-place-mainmenu-42/17-ubuntu-notes/46-easiest-way-to-create-a-usb-dos-boot-disk-using-linux I use the memdisk program from syslinux along with my default grub install to boot a DOS floppy disk image from my hard drive for this purpose. I mount the floppy image using losetup (or the "-o loop" option to the mount command) and copy whatever flash software I currently want into the floppy image. All I need to do then is reboot the machine and select the floppy image entry from my grub menu. No external media required. Here's a link to some info on how to do that: http://www.syslinux.org/wiki/index.php/MEMDISK#GRUB_and_GRUB4DOS My grub entry is slightly different from that web page. Here is what I use: menuentry "Bootable floppy: dos" { insmod part_msdos insmod ext2 set root='(hd0,msdos2)' search --no-floppy --fs-uuid --set=root e4ba3b39-21c9-4b1f-b7e7-c27e4584a12a linux16 /memdisk bigraw initrd16 /images/dos.img } /images is a subdirectory on my /boot partition. Enjoy, Bill Bogstad
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