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RH2288H V2 running SUSE Linux Enterprise Server (SLES) 11 SP3 GRUB error 21 is reported

Publication Date:  2017-11-26 Views:  42 Downloads:  0
Issue Description

Four SATA disks are configured as a RAID 0 array, and two SAS disks are configured as a RAID 1 array, SLES 11 SP3 is installed.GRUB error 21 is reported



Alarm Information

GRUB error 21 is reported


Handling Process
  1. No hardware alarm is generated on the BMC. It is concluded that the error is not caused by a hardware fault
  2. After an attempt to restart the BMC, the problem persists. It is concluded that the KVM is disabled in the BIOS. To resolve the problem, restore the fault CMOS values as follows:

    Log in to the BMC over Secure Shell (SSH) and run the ipmcset -d clearcmos command.

  3. Reinstall the OS.
Root Cause
  1. The error message indicates that the GRUB file may have been damaged due to a power failure or a GRUB boot error may have occurred.

    GRUB error code description:

    21: Selected disk does not exist

  2. After an attempt to power on the server, the BIOS screen is not displayed during the boot process. The KVM does not respond. It is concluded that the KVM is disabled in the BIOS.
Solution

Re-installed the OS

END