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118 ISP2150 2U Rack Server Platform Product Guide
Recovery Boot Jumper
The jumper at pins 9, 10, and 11 controls whether the system attempts to boot using the BIOS
programmed in the boot block area of the FLASH memory. This should be used only if the
operational area of the BIOS is corrupted or needs to be upgraded. Contact your local service
representative before doing this.
Procedure to disable recovery booting:
1. See “General Procedure to Change Jumper Setting” on page 116.
2. Move the recovery boot jumper from pins 9 and 10 to pins 10 and 11.
3. Reinstall the cover for your safety, connect the power cord to the system.
4. Turn the system on, and insert the Flash Memory Update Utility diskette in drive A. After the
system boots, the speaker emits a single beep and the recovery process starts. This takes about
two-to-four minutes. When the recovery process completes, the speaker emits two beeps.
While in the recovery mode, there is no screen display on the monitor. The keyboard is disabled as
the system automatically recovers the BIOS. The following beep codes describe the recovery
status.
Beep Code Message
2 Successful completion, no errors.
4 The system could not boot from the diskette. The diskette may not be
bootable.
Continuous series of low beeps The wrong BIOS recovery files are being used and/or the flash memory
jumper is in the wrong position.
5. Turn the system off, disconnect the power cord(s) from the system, and remove the cover.
6. Move the jumper from pins 9 and 10 to pins 10 and 11 to enable the normal boot mode.
7. Replace the cover, remove the diskette from drive A, and connect the power cord(s) to the
system.
8. After running the special recovery mode, run the SSU to specify a new password. See
Chapter 3.
Boot Block Write Protect Jumper
The jumper at pins 13, 14, and 15 controls whether the BIOS boot block is protected from being
erased and reprogrammed.
CAUTION
Leave boot block jumper at factory default setting: Programming the
boot block incorrectly will prevent the system from booting. Programming
should be done only by a technically qualified person. The procedure
requires a special “Boot Block Update Utility.” Contact your dealer or sales
representative for more information.