Product guide

120
Chapter Six Technical Reference
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.
Recovery Boot Jumper
(continued)
5. Turn the system off, disconnect the power cord(s) from the system and
remove the left side cover.
6. Move the jumper from pins 9-10 to pins 10-11 to enable the normal boot
mode.
7. Replace the left side 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.
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.
Leave the boot block jumper at the factory default setting: Programming the
boot block incorrectly will prevent the system from booting. Programming should be
done only by a Micron qualified technician. The procedure requires a special “Boot
Block Update Utility.” Contact your Micron dealer or sales representative for more
information.
Caution
Procedure to permit boot block erasing and programming:
1. Refer to the “General Procedure to Change Jumper Setting.”
2. Move the boot block jumper from pins 13-14 to pins 14-15 to erase and
program the BIOS boot block.
3. Reinstall the side cover for your safety, and connect the power cord to the
system.
4. Run the Boot Block Update Utility.
5. Turn the system off, and disconnect the power cord from the system.
6. Remove the side cover.