Recovering Bios - IBM Netfinity 4500R User Reference Manual

Lit LED on
diagnostics
panel
DASD2 SCSI channel B has failed.

Recovering BIOS

138
IBM® Netfinity® 4500R User's Reference
Cause
Table 19. Light path diagnostics
If the BIOS has become corrupted, 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.
Note: You can obtain a BIOS flash diskette from one of the following sources:
• Use the ServerGuide program to make a BIOS flash diskette.
• Download a BIOS flash diskette from the World Wide Web. Go to
http://www.pc.ibm.com/support/, select IBM Server Support, and
make the selections for your server.
• Contact your IBM service representative.
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 from the BIOS recovery files on the diskette.
The following illustration shows the location of the boot block jumper on the system
board.
Action
1. If an amber LED on a hot-swap hard
disk drive is on, replace the hard disk
drive.
2. Run the diagnostics programs. Replace
any identified failing device.
3. If the error log indicates a temperature
problem and the fans are working
correctly, have the system serviced.
If the problem still persists, have the system
serviced.