On Gigabyte’s Dual BIOS X86 motherboards; the BIOS flash software is built-in into the Dual BIOS, thus a clean boot disk is no longer required with this line of X86 motherboards.
My AOpen AK79G motherboard works in a similar way. No need for a boot disk, you just double click on one exe file in windows and it will upload the new BIOS to a separate memory area in the BIOS chip, does a CRC check on it and then it reboots itself and copies the BIOS from the separate memory area to the main BIOS flash area before it does anyhing else.
You can even access the BIOS settings from within Windows with this motherboard (you see the familiar BIOS screen in a window).
