Updating (flashing) BIOS from a CD-ROM or diskette
This section describes how to update (flash) the BIOS using a CD-ROM or diskette.
system program updates are available at
http://www.lenovo.com/supporton the World Wide Web.
1. Toupdate (flash) the BIOS:
vIf using a CD-ROM, make sure the computer is turned on. Insert the system
program update (flash) CD-ROM into the optical drive. The update begins.
vIf using a diskette, make sure the computer is turned off. Insert the system
program update (flash) diskette and turn on the computer.The update
begins.
2. When prompted to change the serial number,press Y.
3. Typethe seven-character serial number of your computer and then press Enter.
4. When prompted to change the machine type/model, press Y.
5. Typethe seven-character machine type/model of your computer and then press
Enter.
6. Follow the instructions on the screen to complete the update.
Recovering from a POST/BIOS update failure
Attention: If an interruption occurs during a POST/BIOS update (flash update),
the computer might not restart correctly.If this occurs, perform the following
procedure (also known as a Boot-block recovery).
Note: If your computer has no internal diskette drive, an optional USB diskette
drive must be connected to use the BIOS flash diskette.
1. Turnthe computer off and insert the BIOS flash diskette in the diskette drive.
2. Turnthe computer on and immediately during startup, press Ctrl and Home
keys (Ctrl + Home) at the same time.
3. The computer will automatically begin recovering the BIOS. During this time,
you will see a screen indicating that Flash recovery has started. After the
update session completes, the computer automatically reboots.
4. Remove the BIOS flash diskette from the diskette drive.
786 HardwareMaintenance Manual