After restoring CZ image grub is damaged

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http://askubuntu.com – After I restore disk/partition (same result) backup image of my Ubuntu server using CloneZilla Live, I get no arguments specified error on bootup, then the system is trying to boot but failing. I know the problem is related to video modes, but it doesn't matter and what I need to know is how exactly to backup or restore (which options perhaps to use in CloneZilla advanved mode) in order to restore image to the state that my system was before backup. I was able to recover only after reinstalling grub-pc. So it seems grub was demaged not sure in which stage. (HowTos)