Intel SDS2 manual Performing Cmos Clear, Bios Recovery, and BMC Force Update

Jumpers Intel® Server Board SDS2

Table 80. List of Assembled Jumpers in Production

Jumper	Pins		Default	Operation
CN42	1	– 2	Open	When closed, clears CMOS during POST
	3	– 4	Open	When closed, clears CMOS password
	5	– 6	Open	RESERVED (Do Not Use)
	7	– 8	Open	RESERVED (Do Not Use)
	9 – 10		Open	When closed, forces BIOS Recovery Mode
	11	– 12	Closed	SPARE jumper storage
CN46	1	– 2	Open	When closed, permits BIOS boot block to be updated
CN47	1	– 2	Open	When closed, permits BMC boot block to be updated
CN48	1	– 2	Open	When closed, disables FRB timer
CN49	1	– 2	Open	When closed, forces BMC in Update Mode
CN50	1	– 2	Closed	When closed, disables chassis intrusion sensor

9.2Performing CMOS Clear, BIOS Recovery, and BMC Force Update

9.2.1Performing CMOS Clear

Clear CMOS as follows.

1.Power off the system, unplug the power cord, and remove the chassis panel.

2.Add a jumper on CN42 pins 1-2 (CMOS Clear).

3.Replace the chassis panel, plug in the power cable(s), and power on the system.

4.After POST completes, power down the system, unplug the power cable(s), and remove the chassis panel.

5.Remove the jumper from CN42 pins 1-2.

6.Replace the chassis panel and connect system cables.

7.Power on the system, press F2 at the prompt to run the BIOS Setup utility, and select “Get Default Values” at the Exit menu.

9.2.2Performing BIOS Recovery Boot

In the event of BIOS corruption, the following procedure may be used to perform a BIOS Recovery boot.

1.Prepare a bootable floppy diskette containing the BIOS recovery files for the SDS2 Server Board obtained from Intel’s web sites.

92	Revision 1.2
Order Number:	A85874-002