HP Deskpro ap230 Desktop Management Guide - Deskpro Workstation AP230 - Page 27

FailSafe Boot Block ROM, and restart the computer.

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FailSafe Boot Block ROM The FailSafe Boot Block ROM allows for system recovery in the unlikely event of a ROM flash failure, for example, if a power failure occurs during a ROM upgrade. The Boot Block is a flash-protected section of the ROM that checks for a valid system ROM flash when power to the system is turned on.  If the system ROM is valid, the system starts normally.  If the system ROM fails the validation check, the FailSafe Boot Block ROM provides enough support to start the system from a ROMPaq diskette, which will program the system ROM with a valid image. When the Boot Block detects an invalid system ROM, the system sounds a series of beeps (one long and three short) and flashes the three keyboard lights on and off two times. A Boot Block recovery mode message will appear on the screen. To recover the system after it enters Boot Block recovery mode, complete the following steps: 1. Remove any diskettes from the diskette drive and turn off the power. 2. Insert a ROMPaq diskette into the diskette drive. 3. Turn on power to the system. 4. If no ROMPaq diskette is found, you will be prompted to insert one and restart the computer. 5. If a setup password has been established, the Caps Lock light will turn on and you will be prompted to enter the password. 6. Enter the setup password. 7. If the system successfully starts from the diskette and successfully reprograms the ROM, then the three keyboard lights will turn on. A "rising tone" series of beeps also signals successful completion. The following table lists the various keyboard light combinations used by the Boot Block ROM, as well as the meaning and action associated with each combination. Desktop Management Guide 23

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Desktop Management Guide
23
Compaq Confidential - Need to Know Required
FailSafe Boot Block ROM
The FailSafe Boot Block ROM allows for system recovery in the
unlikely event of a ROM flash failure, for example, if a power failure
occurs during a ROM upgrade. The Boot Block is a flash-protected
section of the ROM that checks for a valid system ROM flash when
power to the system is turned on.
If the system ROM is valid, the system starts normally.
If the system ROM fails the validation check, the FailSafe Boot
Block ROM provides enough support to start the system from a
ROMPaq diskette, which will program the system ROM with a
valid image.
When the Boot Block detects an invalid system ROM, the system
sounds a series of beeps (one long and three short) and flashes the three
keyboard lights on and off two times. A Boot Block recovery mode
message will appear on the screen.
To recover the system after it enters Boot Block recovery mode,
complete the following steps:
1.
Remove any diskettes from the diskette drive and turn off the
power.
2.
Insert a ROMPaq diskette into the diskette drive.
3.
Turn on power to the system.
4.
If no ROMPaq diskette is found, you will be prompted to insert one
and restart the computer.
5.
If a setup password has been established, the Caps Lock light will
turn on and you will be prompted to enter the password.
6.
Enter the setup password.
7.
If the system successfully starts from the diskette and successfully
reprograms the ROM, then the three keyboard lights will turn on. A
“rising tone” series of beeps also signals successful completion.
The following table lists the various keyboard light combinations used
by the Boot Block ROM, as well as the meaning and action associated
with each combination.