[CentOS] Urgent Help

Sat Nov 21 16:40:26 UTC 2015
Siva Prasad Nath <shivaprasadnath21 at gmail.com>

>From yesterday my server was down.
It was showing only rescue menu. I copy grub.cfg to grub.cfg.old. Replace
grub.cfg from another server.
Now I cannot start server. How to revert back grub.cfg and how to put vm in
the boot folder?

Thanks in advance.