Changing Jumper Positions - IBM eServer 240 xSeries User Reference Manual

Bypassing an unknown power-on password
When a power-on password is set, POST does not complete until you enter the
password. If you forget the power-on password, you can regain access to the
server through either of the following methods:

Changing jumper positions

Jumpers located on the system board and the processor board help you to
customize the way your server operates.
Your system board and processor board contain two-pin and three-pin jumper
blocks.
In some cases, groups of jumpers might combine to define a function.
Enter the administrator password at the power-on prompt, if an administrator
password has been set. (If necessary, see "Using the administrator password
menu" on page 25 for details.) Start the Configuration/Setup Utility program
and change the power-on password. See "Using the power-on password
menu" on page 24.
Change switch 4 of switch block 2 (SW2) to the ON position to bypass the
power-on password check. You can then start the Configuration/Setup Utility
program and change the power-on password. See "Using the power-on
password menu" on page 24.
Chapter 5. System board and processor board
103