Digital Equipment FR-902AA-A3, Service Maintenance Manual

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Utilities & Configuration Digital STARION 400i - 900i PC
16 MCS Logistics Engineering - Nijmegen
Using a Crisis Recovery Diskette
The crisis recovery diskette must be used only if the computer's BIOS fails or if a BIOS upgrade was
unsuccessful.
If the computer's BIOS failed to flash properly or is corrupted in some way, the following sequence of
events occurs:
♦
POST detects an error after a normal boot cycle or a BIOS upgrade. This message appears on the
monitor screen, indicating that the computer's BIOS did not flash properly or has failed.
♦
The BIOS in the bootblock memory automatically executes. The computer attempts to find the
correct BIOS files to execute the correct boot cycle.
♦
The computer beeps several times. This means the computer cannot properly boot using the BIOS
files that were just copied during the flash update.
♦
The computer accesses the diskette drive. The computer is searching for the crisis recovery diskette
to restore the BIOS to its previous known state.
Restore the computer's BIOS to its previous known state by performing the following procedures:
1) Turn off the computer, remove the cover and set the recovery mode jumper (J10) to Recovery Mode
(jumpered).
2) Replace the cover, insert the crisis recovery diskette into drive A and then power on the computer.
3) The computer automatically boots from drive A and upgrades the BIOS. Upon completion, the
computer sounds a beep code and attempts to restart.
4) After the BIOS is restarted, turn off power to the computer and remove the crisis recovery diskette
from drive A.
5) Remove the cover and set the recovery jumper (J10) to normal.
6) Replace the cover and turn the power back on for normal operation.
Upgrading the Computer's BIOS
Perform the following steps to update the computer's BIOS in the flash memory to a new updated one:
1) Locate or create a crisis recovery diskette (Do not use a crisis recovery diskette created on any other
computer). Refer to “Creating a Crisis Recovery Diskette”.
Insert the BIOS diskette in the diskette drive.
2) Turn on the computer and allow the POST to complete. The computer now boots from the BIOS
diskette.
If POST detects an error, refer to Chapter 4, “Troubleshooting” to identify and determine how to
correct the problem. After the problem has been resolved, restart the computer.
3) At the MS-DOS prompt, type: A:\UPGRADE\PHLASH.
A screen appears on the monitor warning that the computer's BIOS is about to be erased.
4) Press [Enter] to continue. Press [Esc] to cancel.
If
[Enter] is pressed, PHLASH.EXE automatically updates the computer's BIOS.
After the flashing process completes, the computer automatically reboots itself so changes
immediately take effect.
5) Remove the BIOS diskette.