I'm using ubuntu 15.04.

Yesterday I was using my ubuntu and the computer power supply cut off.

Now today I started my computer I got this message

Gave up waiting for root device. Common problems:

  • Boot args (cat /proc/cmdline)

    • Check rootdelay= (did the system wait long enough?)

    • Check root= (did the system wait for the right device)

  • Missing modules (cat /proc/modules; ls /dev) ALERT! /dev/disk/by-uuid/96889309-5f73-4688-8354-e64cd1bb158f does not exist. Dropping to a shell!

BusyBox v1.21.1 (Ubuntu 1:1.21.0-1ubuntu1) built-in shell (ash) Enter 'help' for a list of build-in commands.


I typed exit command but nothing happened.

I used testdisk command from the live Ubuntu CD but the testdisk is not detecting the hard drive

I installed boot repair tool but it is not showing me Recommended repair button. Boot Repair

Then I clicked on bootinfo summary and I got this


What is wrong with my computer

How do I recover the data

Please Help me Guys...


Maybe a solution with a Live-CD:

  • sudo mount /dev/sdXY /mnt

Repair Grub2:

  • sudo grub-install --root-directory=/mnt /dev/sdX (not sdXY)


After starting system:

  • sudo update-grub

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