How to recover in rescue mode if GRUB boot fails with "Error 15: File not found"

Solution Verified - Updated -

Issue

  • I recently completed some maintenance on my system and rebooted. Now my system cannot boot and shows output similar to the following:

    Booting 'Red Hat Enterprise Linux Server (<Version>)'
    
    root (hd0,0)
    Filesystem type is ext2fs, partition type 0x83
    Kernel /<kernel version>
    
    Error 15: File not Found
    
    Press any key to continue
    

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • rescue mode

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