Create a bootable FreeDOS usb-stick

I needed to upgrade the bios of my Computer (Intel).

But how to do it without windows?

In my case, Intel has many options for bios upgrading and one is the plain old DOS method. This is the best and fastest way to upgrade your bios with linux.

Create a FreeDOS based bootable usb-stick

• Download a FreeDOS image, i'll use Balder for now.
• Prepare the usb-stick
  • check partition (e.g cfdisk /dev/sda)
  • mkfs.msdos /dev/sda1

Commands

qemu -boot a -fda balder10.img -hda /dev/sda
A:\> sys c:
A:\> xcopy /E /N a: c:

Check with

qemu -hda /dev/sda

All GRML uses should also take a look at http://wiki.grml.org/doku.php?id=biosupdate which provides a nice overview.

That's it!