2.1.4 AFUDOS utility Asus prime Asus M3A78

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2-4

ASUS M3A78

•  Obtain the AFUDOS utility (afudos.exe) from the bundled support DVD and the latest 

BIOS file from the ASUS website at www.asus.com.

•  We recommend that you write the BIOS filename on a piece of paper. You will need to 

key in the exact BIOS filename at the DOS prompt later.

2.1.4 

AFUDOS utility

The AFUDOS utility allows you to update the BIOS file in DOS environment using a bootable 

floppy disk. This utility also allows you to copy the current BIOS file that you can use as 

backup when the BIOS fails or gets corrupted during the updating process.

3. 

At the DOS prompt, key in afudos /i[filename]

where [filename] is the BIOS file in the floppy disk.

A:\>afudos /iM3A78.ROM

Press  <Enter>.

Do not shut down or reset the system while updating the BIOS to prevent system boot 

failure!

5. 

The utility returns to the DOS prompt after the BIOS updating process is completed. 

Reboot the system from the hard disk drive.

Updating the BIOS file

To update the BIOS file using the AFUDOS utility:
1. 

Insert the bootable floppy disk into the floppy disk drive to boot the system in DOS 

mode.

2. 

Replace the bootable floppy disk and insert the floppy disk that contains the AFUDOS 

utility and the latest BIOS file.

•  Ensure that you prepare two floppy disks: the bootable floppy disk and the floppy disk 

containing the AFUDOS utility and the latest BIOS file.

•  Ensure that the other floppy disk is not write-protected and has enough space to save 

both the AFUDOS and BIOS files.

•  The succeeding BIOS screens are for reference only. The actual BIOS screen displays 

may not be the same as shown.