Recovery Boot Jumper; Table A-38 Beep Codes - Silicon Graphics 1450 Maintenance Manual

A: Technical Reference

Recovery Boot Jumper

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The jumper at pins 9, 10, and 11 controls whether the system attempts to boot using the
BIOS programmed in flash memory.
Follow these steps to disable recovery booting:
1. Observe the safety and ESD precautions at the beginning of this section.
2. Turn off all connected peripherals, turn off system power, and disconnect all AC
power cords.
3. If the baseboard is installed in a system, remove access covers so that you have
access to the baseboard.
4. Remove the memory module. See "Removing the Memory Module" on page 55.
5. Locate the configuration jumpers at the edge of the baseboard next to the memory
expansion card connector (MECC). See Figure A-2 on page 131 for the location of
the configuration jumpers.
6. Move the recovery boot jumper from pins 9 and 10 to pins 10 and 11.
7. If the baseboard is installed in a system, reinstall the access covers, connect the
power cords, and turn on the system for the change to take effect.
8. Turn on the system, and insert the Flash Memory Update Utility diskette in drive A.
After the system boots, the recovery process starts. This takes about three 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. Table A-38 lists the beep code
messages.
Table A-38 Beep Codes
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 The wrong BIOS recovery files are being used and/or the flash memory
of low beeps jumper is in the wrong position.
007-4276-001