46 xSeries 343 Hardware Maintenance Manual
Recovering the BIOS It is unlikely that anythingwill interrupt the BIOS upgrade; however, if an interruption occurs, the
BIOS could be damaged. The following steps explain how to recover the BIOS if an upgrade fails.
Note
Because of thesmall amount of code available in the non-erasable boot block
area, therei s no videosupport. You will not see anythingon the screen
during the procedure. Monitort he procedureby listening to the speaker.
You must bootto DOS. The BIOS recovery diskettewill not be created
correctlyunder the DOS window of a Windows operating system.
1. Get the BIOS update file package from IBM iBL or http://www.ibm.com/pc/support.
2. A file called “crisis.zip” is one of the files included with each xSeries343 BIOS release file
package.Unzip the “crisis.zip” file to a directory on your hard drive.
3. Format a blank diskette (the diskette should not be a bootable DOS diskette). Insert the diskette
into the diskettedrive.
4. From the DOS, run the “crisdisk.bat” file from the directory you created on your harddrive.
Followt he instructionson the screen to create the BIOS recovery diskette.
Note
The BIOSr ecoverydiskette will not be created correctly under the DOS
window of a Windows operating system. You must boot to a DOS system to
create the BIOSrecovery diskette.
5. Power off the xSeries 343 system, unplug/disconnect the power cord, and removethe chassis
panel.
6. Remove the spare jumper from pins 11-12 on jumper block 1J15 and install it on pins
9-10 (BIOSRecovery) of jumper block 1J15.
7. Insert the BIOS recovery diskette into the diskette drive.
8. Reinstall the chassis panel, plug-in/reconnect the power connection, and power-on the system.
9. The screen will remain blank while the BIOS Recovery is performed. A number of beeps will
occur duringthe BIOS update. The diskette drive access light will not turn off when the BIOS
recoveryis completed. Allow four minutes for the BIOS recovery to complete. If a POST card
is installedin a PCI slot during the BIOS recovery,you can tell that the BIOSrecovery is
complete whencode “EC” is displayed. When the BIOS Recovery is complete, it is safe to
power off the system.
10. Power off the system, unplug/disconnect the power cord, and removethe chassis panel.
11. Remove the BIOS Recovery jumper from pins 9-10 and store the jumper on pins11-12.
12. Replace the chassis panel; plug in the power cord(s), and power on thesystem.
13. Perform a CMOS clear following the BIOS recovery.