Asus P9X79 DELUXE User Manual download pdf (Page 128)

3-52 Chapter 3: BIOS setup

Chapter 3

Booting the system in DOS environment

1. Insert the USB flash drive with the latest BIOS file and BIOS Updater to the USB port.

2. Boot your computer. When the ASUS Logo appears, press <F8> to show the BIOS

Boot Device Select Menu. Insert the support DVD into the optical drive and select the

optical drive as the boot device.

Welcome to FreeDOS (http://www.freedos.org)!

C:\>d:

D:\>

3. When the Make Disk menu appears, select the FreeDOS command prompt item by

pressing the item number.

4. At the FreeDOS prompt, type d: and press <Enter> to switch the disk from

Drive C (optical drive) to Drive D (USB flash drive).

3.10.4 ASUS BIOS Updater

The ASUS BIOS Updater allows you to update BIOS in DOS environment. This utility also

allows you to copy the current BIOS file that you can use as a backup when the BIOS fails or

gets corrupted during the updating process.

The succeeding utility screens are for reference only. The actual utility screen displays may

not be same as shown.

Before updating BIOS

1. Prepare the motherboard support DVD and a USB flash drive in FAT32/16 format and

single partition.

2. Download the latest BIOS file and BIOS Updater from the ASUS website at http://

support.asus.com and save them on the USB flash drive.

• NTFS is not supported under DOS environment. Do not save the BIOS file and BIOS

Updater to a hard disk drive or USB flash drive in NTFS format.

• Do not save the BIOS file to a floppy disk due to low disk capacity.

3. Turn off the computer and disconnect all SATA hard disk drives (optional).

Please select boot device:

SATA: XXXXXXXXXXXXXXXX

USB XXXXXXXXXXXXXXXXX

UEFI: XXXXXXXXXXXXXXXX

Enter Setup

 ↑ and ↓ to move selection

ENTER to select boot device

ESC to boot using defaults

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Asus P9X79 DELUXE User Manual Page 128