Technical Reference
69
2.8 Jumper Block
CAUTION
Do not move the jumper with the power on. Always turn off the power and unplug the power cord
from the computer before changing a jumper setting. Otherwise, the board could be damaged.
Figure 23 shows the location of the jumper block. The 3-pin jumper block determines the BIOS
Setup program’s mode. Table 33 describes the jumper settings for the three modes: normal,
configure, and recovery. When the jumper is set to configure mode and the computer is powered-
up, the BIOS compares the processor version and the microcode version in the BIOS and reports if
the two match.
OM19036
3
1
J6J2
Figure 23. Location of the Jumper Block
Table 33. BIOS Setup Configuration Jumper Settings
Function/Mode Jumper
Setting Configuration
Normal 1-2
1
3
The BIOS uses current configuration information and
passwords for booting.
Configure 2-3
1
3
After the POST runs, Setup runs automatically. The
maintenance menu is displayed.
Recovery None
1
3
The BIOS attempts to recover the BIOS configuration. A
recovery diskette is required.
Summary of Contents for D975XBX
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