IBM 6643 - Manual (Page 77)

Chapter 7. Additional service information
Security . . . . . . . . . . . . . . . 69
Passwords . . . . . . . . . . . . . . 69
Power-on password . . . . . . . . . 69
Removing a power-on password . . . . 69
Administrator password . . . . . . . . 70
Administrator password control . . . . . 70
Operating system password . . . . . . . 70
Vital product data . . . . . . . . . . . 70
Alert on LAN . . . . . . . . . . . . 70
Hard disk drive jumper settings . . . . . . 70
IDE hard disk drive settings . . . . . . . 71
CD-ROM drive/DVD drive jumper settings . . 71
BIOS levels . . . . . . . . . . . . . 71
CMOS Clear Procedure . . . . . . . . . 72
Flash (BIOS/VPD) update procedure . . . . . 72
Power management . . . . . . . . . . 73
Advanced Configuration and Power Interface
(ACPI) BIOS . . . . . . . . . . . . . . 73
Advanced Power Management . . . . . . . . 73
Automatic Hardware Power Management features 73
Setting Automatic Hardware Power Management
features . . . . . . . . . . . . . . . . 73
Automatic Power-On features . . . . . . . . 74
Network settings . . . . . . . . . . . . 74
Flash over LAN (update POST/BIOS over network) 74
Wake on LAN . . . . . . . . . . . . . 75
Security
Security features in this section include the following:
v Power-on and Administrator Passwords
v Alert on LAN
Passwords
The following section provides information about computer hardware and
software-related passwords.
v Power-on Password
v Administrator Password
v Operating System Password
Power-on and Administrator passwords are set in the Setup Utility program. See
“Setup Utility program” on page 5 for information about running the Setup Utility.
Power-on password
A power-on password denies access to the computer by an unauthorized user
when the computer is powered on. When a power-on password is active, the
password prompt appears on the screen each time the computer is powered on.
The computer starts after the proper password is entered.
Removing a power-on password: To service a computer with an active and
unknown power-on password, power-off the computer and use the following
procedure:
1. Unplug the power cord.
2. Remove the rear bucket housing and rear EMC cover assembly.
3. Refer to “System board layout” on page 14 to find the CMOS jumper.
4. Change the CMOS jumper from pins 1,2 to pins 2,3.
5. Power-on the computer. The system senses the change in the switch setting and
erases the password.
6. Power-off the computer.
7. Change the CMOS jumper back to pins 1,2.
8. Install the rear EMC cover assembly and rear bucket housing.
9. Remind the user to enter a new password when service is complete.
© Copyright IBM Corp. 2004 69