IBM 8647 - Eserver xSeries 225, Maintenance And Troubleshooting Manual

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Recovering from a POST/BIOS update failure
If power to your server is interrupted while POST/BIOS code is being updated (flash
update), your server might not restart (reboot) correctly. If this happens, use the
following procedure to recover:
1. Review “Safety information” on page 131
2. Turn off the server and all attached devices.
3. Unplug the power cord; then, disconnect all external cables.
4. Remove the side cover and frame-support bracket. (See “Removing the side
cover” on page 41 and “Removing the frame-support bracket” on page 43)
5. Locate the boot block recovery jumper (J12) on the system board, removing
any adapters that impede access to the jumper. The following illustration
shows the location of the jumper on the system board.
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
CMOS recovery
jumper (JBAT1)
Boot block
recovery jumper
(J12)
Keep data
Normal
Clear data
Configure
Recovery
(no jumper)
(J12)
6. Remove the boot block recovery jumper from pins 1 and 2.
7. Replace any adapters that were removed; then, replace the frame-support
bracket and replace the side cover. (See “Removing the frame-support
bracket” on page 43 and “Installing the side cover” on page 71)
8. Connect the server to a power source, keyboard, monitor, and mouse.
9. Insert the POST/BIOS update (flash) diskette into the diskette drive. You can
download a file to create this diskette from http://www.ibm.com/pc/support on
the World Wide Web. For more information, see Appendix A, “Getting help and
technical assistance,” on page 129
10. Turn on the server and the monitor.
11. After the update session completes, turn off the server and monitor.
12. Remove the diskette from the diskette drive.
13. Disconnect all power cords and external cables; then, remove the side cover.
14. Return the boot block recovery jumper to pins 1 and 2.
Chapter 3. Diagnostics
27