IBM A40 TYPE 6840, Hardware Maintenance Manual

Page: 91 / 148

Chapter 8. Additional Service Information
Security features . . . . . . . . . . . . . 85
Passwords . . . . . . . . . . . . . . 85
Power-on password . . . . . . . . . 85
Removing a power-on password . . . . . 85
Administrator password . . . . . . . . 86
Administrator password control . . . . . 86
Operating system password . . . . . . . 86
Vital product data . . . . . . . . . . . 86
Management Information Format (MIF) . . . . 86
Alert
on LAN . . . . . . . . . . . . 87
BIOS levels . . . . . . . . . . . . . . 87
Flash (BIOS/VPD) update procedure . . . . . . 88
Flash recovery boot block jumper . . . . . . . 88
Power management . . . . . . . . . . . 89
Automatic configuration and power interface
(ACPI)
BIOS . . . . . . . . . . . . . 89
Advanced Power Management . . . . . . . 89
Automatic Hardware Power Management
features
. . . . . . . . . . . . . . . 89
Setting Automatic Hardware Power Management
features
. . . . . . . . . . . . . . . 90
Automatic Power-On features . . . . . . . 90
Network settings . . . . . . . . . . . . 90
Flash over LAN (update POST/BIOS over
network)
. . . . . . . . . . . . . . 91
Wake on LAN . . . . . . . . . . . . 91
Security features
Security features in this section include the following:
v
Passwords
v
Vital Product Data
v
Management Information Format (MIF)
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 7 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.
Note: On some models, this procedure will also remove the administrator password.
1. Unplug the power cord and remove the top cover.
2. Refer to “A40/A40P/A40i system board layout” on page 29 to find the
recovery jumper.
3.
Move the recovery jumper from
normal
to
clear
.
4. Power-on the computer. The system senses the change in the position and
erases the password.
It is necessary to move the jumper back to the previous position.
© Copyright IBM Corp. 2000
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