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Upgrading CUCM from 6.0.1.1000-37 to 6.0.1.2000-4

After upgrading CUCM from 6.0.1.1000-37 to 6.0.1.2000-4 and selecting the option to reboot into the upgraded version of CUCM, when the Server starts up I get the following error message on the console screen and the system hangs.

FS: Cannot open root device “LABEL=/partB” or 00:00

Please append a correct “boot=” boot option

Kernel panic: VFS: Unable to mount root FS on 00:00

I have to use the recovery disk to switch the boot partitions to get the system up and running again with the old version 6.0.1.1000-37

I know it is an OS problem (kernel panic), but there are not any cisco documents available, which will help in trouble shooting.

Any idea how to fix this and get the system to boot from the upgraded version?

Thanks in advance for your help.

Thanks

Mohan

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