Runtime Services; Upgrading The Rom Bios; Boot Block Rom - Compaq AP500 - Professional - 128 MB RAM Reference Manual

2-10 Compaq Setup and Diagnostic Software
3. Detect and spin up all drives.
4. Boot from, in sequence, either a CD, a diskette, or the hard drive.
Refer to Appendix D, "POST Error Messages," for a listing of POST error
codes and steps you can take to resolve an error condition.

Runtime Services

After your workstation boots to the operating system, the BIOS still provides
some runtime services to the operating system. For instance, the BIOS
provides information to the operating system on how many processors are
installed, how the system interrupts are configured, and information on the
disk drives. BIOS also provides information about your workstation's
configuration and maintenance.

Upgrading the ROM BIOS

Since the BIOS is stored in ROM on the system board, the upgrade procedure
is different than the upgrade procedure for other software.
New versions of BIOS may be downloaded from the Compaq website at
http://www.compaq.com. BIOS upgrades are called ROMPaq.
To upgrade your ROM BIOS, execute the ROMPaq software and follow the
directions.

Boot Block ROM

The Boot Block ROM cannot be upgraded.
For more information about Boot Block ROM, see the section "FailSafe Boot
Block ROM" in Chapter 3.