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ASUS PU-DLS/PU-DL motherboard user guide
4-1
4.1.1 Creating a bootable disk
AFLASH.EXE is a Flash Memory Writer utility that updates the BIOS by
uploading a new BIOS file to the programmable firmware hub (FWH) on
the motherboard. This file works only in DOS mode. To determine the
BIOS version of your motherboard, check the last four numbers of the
code displayed on the upper left-hand corner of your screen during
bootup. Larger numbers represent a newer BIOS file.
1. Type FORMAT A:/S at the DOS prompt to create a bootable system
disk. DO NOT copy AUTOEXEC.BAT and CONFIG.SYS to the disk.
2. Type COPY D:\AFLASH\AFLASH.EXE A:\ (assuming D is your
CD-ROM drive) to copy AFLASH.EXE to the boot disk you created.
BIOS setup must specify “Floppy” as the first item in the boot
sequence.
4. In DOS mode, type A:\AFLASH <Enter> to run AFLASH.
If the word “unknown” appears after Flash Memory:, the memory chip
is either not programmable or is not supported by the ACPI BIOS and
therefore, cannot be programmed by the Flash Memory Writer utility.
AFLASH works only in DOS mode. It does not work in the DOS prompt
within Windows, and does not work with certain memory drivers that
may be loaded when you boot from the hard drive. It is recommended
that you reboot using a floppy disk.
3. Reboot the computer from the floppy disk.
4.1 Managing and updating your BIOS