Recovering Bios Code - IBM eserver xSeries 232 8668 Hardware Maintenance Manual

Recovering BIOS

Recovering BIOS code

If the BIOS code has become damaged, such as from a power failure during a flash
update, you can recover the BIOS using the recovery boot block and a BIOS flash
diskette.
Note: You can obtain a BIOS flash diskette from one of the following sources:
The flash memory of your server contains a protected area that cannot be
overwritten. The recovery boot block is a section of code in this protected area that
enables the server to start up and to read a flash diskette. The flash utility recovers
the system BIOS code from the BIOS recovery files on the diskette.
To recover the BIOS:
Note: Default to pins 1 and 2 and is highlighted.
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Hardware Maintenance Manual: Type 8668
v Use the ServerGuide program to make a BIOS flash diskette.
v Download a BIOS flash diskette from the World Wide Web. Go to
http://www.ibm.com/pc/support, select IBM Server Support, and make
the selections for your server.
v Contact your IBM service representative.
System board
switch block
(SW1)
1. Turn off the server and peripheral devices and disconnect all external cables
and power cords; then, remove the cover.
2. Locate the boot block jumper block (J16) on the system board.
3. Move jumper to pins 2 and 3 to enable BIOS back-up page.
4. Insert the BIOS flash diskette into the diskette drive.
5. Restart the server.
6. The system begins the power-on self-test (POST). Select 1 - Update
POST/BIOS from the menu that contains various flash (update) options.
Flash boot block
recovery jumper
(J16)