Hey, You'll need to be a bit more specific on how it hangs and when. Which part of the boot-up sequence, is there any errors on screen, and so on. Best regards, -- Sander Kuusemets On 11/20/2015 10:48 AM, Siva Prasad Nath wrote: > Hi, > My server not able to boot up. It is hanging after few times. > How to repair boot system? I am trying to use grub2-install. Is it > necessary to install grub2 on boot device? > > Please help. > > Thanks in advance. > >