Chapter 7 BIOS ROM

7.3BOOT FUNCTIONS

The BIOS supports various functions related to the boot process, including those that occur during the Power On Self-Test (POST) routine.

7.3.1 BOOT DEVICE ORDER

The default boot device order is as follows:

1.CD-ROM drive (EL Torito CD images)

2.Diskette drive (A)

3.Hard drive (C)

4.Network boot

The order can be changed in the ROM-based Setup utility (accessed by pressing F10 when so prompted during POST).

7.3.2 NETWORK BOOT (F12) SUPPORT

The BIOS supports booting the system to a network server. The function is accessed by pressing the F12 key when prompted at the lower right hand corner of the display during POST. Booting to a network server allows for such functions as:

Flashing a ROM on a system without a functional operating system (OS).

Installing an OS.

Installing an application.

These systems include, as standard, an integrated Intel 82562-equivalent NIC with Preboot Execution Environment (PXE) ROM and can boot with a NetPC-compliant server.

7-4Compaq Evo and Workstation Personal Computers

Featuring the Intel Pentium 4 Processor

Second Edition - January 2003

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Compaq W4000 manual Boot Functions, Boot Device Order, Network Boot F12 Support