IBM 88371RU, Maintenance And Troubleshooting Manual

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6. Remove the BIOS boot backup jumper from pins 1 and 2, and place it on pins
2 and 3.
7. Replace any components that were removed.
8. Replace the cover.
9. Connect the server to a power source, keyboard, monitor, and mouse.
10. If the diskette drive contains a diskette, remove it.
11. Insert into the diskette drive the BIOS recovery diskette that you have created
from http://www.ibm.com/support/.
12. Turn on the server and the monitor.
13. After the update session is completed, turn off the server and monitor.
14. Remove the diskette from the diskette drive.
15. Disconnect all power cords and external cables.
16. Remove the cover.
17. Remove any components that impede access to the jumper block.
18. Remove the BIOS boot backup jumper from pins 2 and 3, and place it on pins
1 and 2.
19. Replace any components that were removed.
20. Reinstall the cover.
21. Reconnect all external cables and power cords and turn on the peripheral
devices.
22. Turn on the server to restart the operating system.
Erasing a lost or forgotten password (clearing CMOS memory)
This section applies to a lost or forgotten power-on password. For general
information about passwords, see the User’s Guide on the IBM Documentation CD.
Attention: If an administrator password is lost or forgotten, there is no way to
change, override, or remove it. You must replace the system board.
To set the power-on password reset jumper and erase a forgotten password,
complete the following steps:
1. Read Appendix B, “Safety information,” on page 129 and “Handling
static-sensitive devices” on page 16.
2. Turn off the server and all attached devices.
BIOS boot backup (J21)
Password reset (J22)
Force update BMC (J48)
Figure 65. BIOS boot backup jumper location
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xSeries 336 Type 1879 and Type 8837: Hardware Maintenance Manual and Troubleshooting Guide