Lenovo 7848, Hardware Maintenance Manual

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Chapter 10. Additional Service Information
This chapter provides additional information that the service representative might
find helpful.
Security features
Security features in this section include the following:
v
Passwords
v
Vital Product Data
v
Management Information Format (MIF)
Hardware controlled Passwords
Hardware controlled passwords are set using the Setup Utility program. For more
information about passwords, see “Using passwords” on page 49.
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.
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 To determine the current Level of BIOS:
– Start the Setup Utility.
– Select Standard CMOS Features.
v
Sources for obtaining the latest level BIOS available
1. Lenovo support web site:
http://www.lenovo.com/support/
2.
Lenovo Customer Support Center
3.
Levels 1 and 2 Support
To update (flash) the BIOS, see “Flash update procedures.”
Flash update procedures
This section details how to flash (update) the BIOS.
Updating (flashing) BIOS from a diskette or disc
This section describes information about how to update (flash) the BIOS using a
diskette or a disc. System BIOS program updates are available at:
http://www.lenovo.com/support
© Lenovo 2005, 2008. Portions © IBM Corp. 2005.
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