2-4 Chapter 2: BIOS setup
2.1.4 AFUDOS utility
The AFUDOS utility allows you to update the BIOS le in DOS environment using a bootable
oppy disk with the updated BIOS le. This utility also allows you to copy the current BIOS
le that you can use as backup when the BIOS fails or gets corrupted during the updating
process.
Copying the current BIOS
To copy the current BIOS le using the AFUDOS utility:
• Ensure that the oppy disk is not write-protected and has at least 1024KB free space to
save the le.
• The succeeding BIOS screens are for reference only. The actual BIOS screen displays
may not be the same as shown.
1. Copy the AFUDOS utility (afudos.exe) from the motherboard support DVD to a
bootable oppy disk.
2. Boot the system in DOS mode.
3. At the prompt key in
afudos /o[lename]
where the [lename] is any user-assigned lename of not more than eight
alphanumeric characters for the main lename and three alphanumeric characters for
the extension name.
Main lename Extension name
A:\>afudos /oOLDBIOS1.rom
then press <Enter> to copy the current BIOS le to the oppy disk.
4. The utility returns to the DOS prompt after copying the current BIOS le.
Updating the BIOS le
To update the BIOS le using the AFUDOS utility:
1. Visit the ASUS website (at www.asus.com) and download the latest BIOS le for the
motherboard. Save the BIOS le to a bootable oppy disk.
We recommend that you write the BIOS lename on a piece of paper. You will need to key
in the exact BIOS lename at the DOS prompt later.
2. Copy the AFUDOS utility (afudos.exe) from the motherboard support DVD to a
bootable oppy disk.
3. Boot the system in DOS mode.
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