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This is absolutly critical: at no stage is the USB stick to be mounted.

qemu (apt-get install qemu), qemu is needed for the installer, basically the emulated qemu BIOS makes your USB stick appear to FreeDOS as an ordinary harddisk, so you can install as usual (and avoids burning the FreeDOS CD).A FreeDOS install medium fdbasecd.iso (8MB).FAT16 is the recommended format as FAT32 is not detected as bootable by every BIOS. A USB stick, preferably Some BIOSes accept USB Floppies, CD-ROMs or ZIP drives, although these might be usable, it may be more difficult to implement the upgrade, however you may have no other choice, (netbooks in particular). This will work with USB keys, USB sticks and with micro/mini/SD cards (with a suitable adapter).įirstly, your BIOS needs to allow booting from USB - and be compatible with USB harddisks. This is a way to update BIOS from a USB in linux. The installer program usually offered is an application to run MS-DOS. You may want, or have a need, to update the BIOS of your PC, when the manufacturer of the motherboard announces some improvement of BIOS software.