IBM 220 manual Recovering the BIOS code

Recovering the BIOS code

If the BIOS code has become damaged, such as from a power failure during a flash update, you can recover the BIOS code using the flash ROM page-swap jumper (J38)

and a BIOS flash diskette.

Note: You can obtain a BIOS flash diskette from one of the following sources:

•Use the ServerGuide program to make a BIOS flash diskette.

•Download a BIOS flash diskette from the World Wide Web. Go to http://www.ibm.com/pc/support/, select IBM Server Support, and make the selections for your server.

•Contact your IBM service representative.

The flash memory of your server consists of a primary page and a backup page. The J38 jumper controls which page is used to start the server. If the BIOS code in the primary page is damaged, you can use the backup page to start the server; then, start the BIOS flash diskette to restore the BIOS code to the primary page.

To recover the BIOS code, do the following:

1.Turn off the server and peripheral devices and disconnect all external cables and power cords; then, remove the cover.

2.Locate jumper J38 on the system board.

Switch block

Flash ROM page-swap jumper (J38)

3.Move J38 to the "lo" setting (pins 2 and 3) to enable BIOS recovery mode.

4.Reconnect all external cables and power cords and turn on the peripheral devices.

5.Insert the BIOS flash diskette into the diskette drive.

6.Restart the server. The system begins the power-on self-test (POST).

7.Select 1 - Update POST/BIOS from the menu that contains various flash (update) options.

8.When prompted as to whether you want to save the current code to a diskette, press N.

9.When prompted to choose a language, select a language (from 0 to 7) and press Enter to accept your choice.

10.Do not restart your system at this time.

11.Remove the BIOS flash diskette from the diskette drive.

Chapter 6. Solving problems 97