Configuring the System 3-41
System Board Jumper Summary
Jumper
Function
Pins (default in
bold)
What it does at system
reset
A
9-10
System boots normally.
BMC Forced
Update Mode
10-11
System tries to boot BMC
firmware.
B
Chassis Intrusion
Detection
5-6, Enable
Switch installed on chassis
indicates when cover has
been removed.
6-7, Disable
Chassis intrusion switch is
bypassed.
C
FRB Timer Enable
1-2, Enable
FRB operation is enabled
(system boots from
processor 1 if processor 0
fails).
2-3, Disable
FRB is disabled.
D
Boot Block Write
Protect
13-14, Protect
BIOS boot block is write-
protected.
14-15,
Erase/Program
BIOS boot block is
erasable and
programmable.
E
Recovery Boot
9-10, Normal
System attempts to boot
using the BIOS stored in
flash memory.
10-11, Recovery
BIOS attempts a recovery
boot, loading BIOS code
from a diskette into the
flash device. This is
typically used when the
BIOS code has been
corrupted.
F
Password Clear
5-6, Protect
Maintains the current
system password.
6-7, Erase
Clears the password.