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Chapter 3
Maintaining the Server
Using the BIOS Recovery DIP Switch
Depending on which stage the BIOS becomes corrupted, you might see different behavior.
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As indicated by the message shown above, there are two procedures for recovering the BIOS. Try
Note
procedure 1 first. If that procedure does not recover the BIOS, use procedure 2.
Procedure 1: Reboot with recovery.cap File
Download the BIOS update package and extract it to a temporary location.
Step 1
Copy the contents of the extracted recovery folder to the root directory of a USB thumb drive. The
Step 2
recovery folder contains the recovery.cap file that is required in this procedure.
Note
Step 3
Insert the USB thumb drive into a USB port on the server.
Step 4
Reboot the server.
Step 5
Return the server to main power mode by pressing the Power button on the front panel.
The server boots with the updated BIOS boot block. When the BIOS detects a valid recovery.cap file on
the USB thumb drive, it displays this message:
Step 6
Wait for server to complete the BIOS update, and then remove the USB thumb drive from the server.
Note
OL-32474-01
If the BIOS BootBlock is corrupted, you might see the system get stuck on the following message:
Initializing and configuring memory/hardware
If it is a non-BootBlock corruption, the following message is displayed:
****BIOS FLASH IMAGE CORRUPTED****
Flash a valid BIOS capsule file using Cisco IMC WebGUI or CLI interface.
IF Cisco IMC INTERFACE IS NOT AVAILABLE, FOLLOW THE STEPS MENTIONED BELOW.
1. Connect the USB stick with recovery.cap file in root folder.
2. Reset the host.
IF THESE STEPS DO NOT RECOVER THE BIOS
1. Power off the system.
2. Mount recovery jumper.
3. Connect the USB stick with recovery.cap file in root folder.
4. Power on the system.
Wait for a few seconds if already plugged in the USB stick.
REFER TO SYSTEM MANUAL FOR ANY ISSUES.
The recovery.cap file must be in the root directory of the USB thumb drive. Do not rename this
file. The USB thumb drive must be formatted with either FAT16 or FAT32 file systems.
Found a valid recovery file...Transferring to Cisco IMC
System would flash the BIOS image now...
System would restart with recovered image after a few seconds...
During the BIOS update, Cisco IMC shuts down the server and the screen goes blank for about
10 minutes. Do not unplug the power cords during this update. Cisco IMC powers on the server
after the update is complete.
Cisco UCS C240 M4 Server Installation and Service Guide
Service DIP Switches
3-75
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