IBM xSeries 236 8841, User Manual

Page: 109 / 210

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 switch and erase a forgotten password,
complete the following steps:
1. Read Appendix B, “Safety information,” on page 153 and “Handling
static-sensitive devices” on page 12.
2. Turn off the server and all attached devices.
3. Disconnect the power cord; then, disconnect all external cables.
4. Remove the cover (see “Removing the left-side cover” on page 14).
5. Locate the password reset switch (position 2 of SW1) on the system board,
removing any components that impede access to the switch.
4
3
2
1
3
2
1-2
Normal
2-3
Recovery
S 1 W
Boot block
recovery jumper (J5)
2 3
5 6 7
Password
override
1
8
Force
BMC
override
Force
power-on
SW2
NMI button
Chapter 5. Diagnostics
99