How to re-install GRUB bootloader on the Master Boot Record(MBR) in rescue mode

Solution Verified - Updated -

Issue

  • I had to restore my system and data partitions from tape after a crash. Why does my Red Hat Enterprise Linux system only shows a black screen after POST?

  • Why does my Red Hat Enterprise Linux 4 system on a hang on the word GRUB?

  • Why does my Red Hat Enterprise Linux 6 system drops to GRUB rescue prompt on boot?

  • How to reinstall grub2 into the MBR on Red Hat Enterprise Linux 7

    GNU GRUB version 0.97 (638K lower / 3143616K uper memory)
    
    [ Minimal BASH-like line editing is supported. For the first word. TAB
    lists possible command completions. Anywhere else TAB lists the possible 
    comlettions of a device/filename.]
    
    grub>
    
  • I re-installed Windows on my server and now I can no longer boot to Red Hat Enterprise Linux.

  • On attempting to re-install grub I get the following error:

    grub> root (hd0,0)
    root (hd0,0)
    
    Error 5: Partition table invalid or corrupt
    
    grub> setup (hd0)
    setup (hd0)
    
    Error 12: Invalid device requested
    
  • The system boot gets stops with the following message:

    GRUB loading stage 2
    

Environment

  • Red Hat Enterprise Linux 3
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • GRUB

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