Updating BIOS on DOS

Solution 1:

This is too large to put in as a comment in to Dave Rook's answer, but windows does not have the option to make a bootable floppy in the newer versions of windows, or you may not even have a floppy drive to copy the file to at all.

You can make a bootable USB drive that acts just like a bootable floppy

Here is a snippit from a email I got while working with a different company that I needed to be in DOS mode to run their recovery tool.

Making a boot USB key . . .

If your system can boot a USB device, here is some basic instructions for making a bootable USB key.

HP makes an easy to use utility called HP USB Disk Format Tool, which includes a "Create a DOS Startup Disk" option. It's available for free download at http://files.extremeoverclocking.com/file.php?f=197 along with the Windows 98/DOS boot files http://files.extremeoverclocking.com/file.php?f=196.

You can use the HP tool and point it at a directory where you unzip the DOS boot files and it automatically builds a bootable DOS USB key using those files.

Once you have your USB bootable drive just follow the directions in the PDF (starting right after the format step (Section Two)) but use the usb drive wherever it says to use a floppy.

Here is an additional link to instructions for making the boot USB stick, it also has it's own links to copies of the two files if the first two links in my answer do not work (Thank you Journeyman Geek for the extra link).

Solution 2:

I think this (large) Gigabyte document will help you.

http://www.gigabyte.com/webpage/20/images/flashbios_dos.pdf

There is just too much information in the document to copy the relevant part into my post, sorry for a link only answer.