Recovering Bios Code - IBM xSeries 300 Hardware Maintenance Manual

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 boot block jumper and a BIOS flash
diskette. The boot block jumper selects between normal BIOS mode and flash
recovery mode. In the normal position, the jumper will be installed on pins 2 and
3. In the recovery position, the jumper will be installed on pins 1 and 2.
There are two choices when flashing BIOS. If you select flashing to Server mode,
internal only COM PORT 2 and USB keyboard and mouse emulation will be OFF
by default. These can be turned on, either individually or both, by going into F1
setup and turning them on. This will require a reboot. If you select flashing to
Appliance mode, internal only COM PORT 2 and USB keyboard and mouse
emulation will be ON by default. They can be turned off, either individually or
both, by going into F1 setup and turning them off. This will require a reboot.
If the only US devices attached are keyboard and mouse and they are not working,
investigate the F1 setup settings for these options. You can use a USB keyboard to
press F1 and get into setup.
Note: You can obtain a BIOS flash diskette from one of the following sources:
Complete the following steps to recover the BIOS code:
v Use the ServerGuide program to make a BIOS flash diskette.
v Download files to make a BIOS flash diskette from the World Wide Web.
Go to http://www.ibm.com/pc/support/, select IBM System Support,
and then make the selections for your system.
1. Turn off the server and peripheral devices and disconnect all external cables
and power cords; then, remove the cover, see "Removing the cover" on
page 38.
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Chapter 3. Diagnostics