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Chapter 8 System Board Jumpers
Fault Resilient Booting (FRB)
The jumper on the J3J1 FRB ENA pins allows the system to boot from
processor 1 if processor 0 fails. Moving the jumper to the DIS pins lets the
system boot only from processor 0.
To boot only from processor 0, do this:
1. Observe the precautions on page 3, “Safety Guidelines.”
2. Remove the left side cover as described in Chapter 4, “Working Inside
Your System.”
3. Move the jumper on the J3J1, FRB from the ENA pins to the DIS pins.
4. Replace the left side cover, and connect the power cord(s) to the system.
5. Turn the system on, and wait for POST to complete; for instructions on
running POST, see Chapter 3, “Configuring The System.”
6. Run the SCU to configure your system. For information on running the
SCU, see Chapter 3, "Configuring The System."
Flash Memory
The jumper on the J3J1, Flash PROG pins applies +12 V power to the VPP
pin on the flash memory device. This allows you to update the BIOS in
flash memory with a special Flash Memory Update Utility. Moving the
jumper to the PROT pins protects the contents of flash memory.
For a copy of the latest system BIOS release, contact your dealer or sales
representative.
Updating the BIOS
Before you can update the system BIOS from the Flash Memory Update
Utility diskette, you must make it MS-DOS bootable. You must have either
MS-DOS version 5.00 or 6.00 (or greater) installed on C:\DOS.
To prevent accidentally installing a BIOS for a different type of system, the
update utility insures that the BIOS matches the target system.
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CAUTION
To avoid memory conflicts, do not run the update utility
with extended memory managers.