/var
 

Hello there, if anyone please explain the possible cause of this error.

Thank you so much,
Hanybon

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/var: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e. without -a or -p options)

*** An error occured during the file system check.
*** Dropping you to a shell; the system will reboot
***when you leave the shell
Give root password for maintenance
(or type Control-D for manual start-up):

The file-system checker (fsck) has encountered an error in the /var filesystem from which it cannot automatically recover.
The most common reason for errors like this is that you have just, for some reason, had to hard-reset the box ("pull the plug"), without being able to gracefully unmount all filesystems first.
Take the advice given in the error message, and at the command prompt, type For example, if /var lives on hda2, type "fsck /dev/hda2".