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Operating system password
An operating system password is very similar to a power-on password and denies
access to the computer by an unauthorized user when the password is activated.
The computer is unusable until the password is entered and recognized by the
computer.
Vital product data
Each computer has a unique Vital Product Data (VPD) code stored in the
nonvolatile memory on the system board. After you replace the system board, the
VPD must be updated. To update the VPD, see “Flash (BIOS/VPD) update
procedure” on page 105.
Desktop Management Interface (DMI)
Desktop Management Interface (DMI) is data containing a list of the system unit
serial number along with all serialized components (for example, system board,
riser card, memory, and processor). This can be viewed with a DMI (SM BIOS)
browser.
Alert on LAN
Alert on LAN provides notification of changes in the computer, even when the
computer power is turned off. Working with DMI and Wake on LAN
®
technologies, Alert on LAN helps to manage and monitor the hardware and
software features of the computer. Alert on LAN generates notifications to the
server of these occurrences:
v Computer disconnected from the network
v Computer unplugged from the power outlet
v All POST errors
v Operating system or POST hang condition
Alert on LAN events are configured to be Enabled or Disabled from the LAN
server only, and not from the computer. See the LAN administrator for
configuration status information.
BIOS levels
An incorrect level of BIOS can cause false errors and unnecessary FRU
replacement. Use the following information to determine the current level of BIOS
installed in the computer, the latest BIOS available for the computer, and where to
obtain the latest level of BIOS.
v Current Level BIOS information
– Run the Configuration Utility to determine the level of BIOS installed.
v Sources for determining the latest level BIOS available
1. IBM Home Page
http://www.ibm.com/pc/us/
2. PC PartnerInfo-Technical Database (CTSTIPS.NSF)
3. HelpCenter
®
4. Levels 1 and 2 Support
5. RETAIN
®
v Sources for obtaining the latest level BIOS available
1. IBM Home Page
104 Hardware Maintenance Manual