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Ubuntu 14.04 crashed and I don't know how to get it back. I'm stuck on GNU GRUB version 2.02~beta2-9ubuntu1.2. I've tried going to Advanced Options and choosing a recovery mode, but to no avail. What should I do?

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You can use Ubuntu Installation Cd then once you boot it go through option try Ubuntu... this will takes you to a live session.

Once you are in you can try to update your GRUB and restart. If this doesn't help boot again to liveCD and make a backup of your data then try to figure what crashes your system. If you can't get reasons you can just reinstall.

To install grub from live cd

Boot from a Live CD.

Hit Alt+Ctrl+T to open terminal and run following commands:

sudo mount /dev/sdaX /mnt

replace sdaX with your Ubuntu partition (mostly sda1)

Install the GRUB2 boot loader:

sudo grub-install --root-directory=/mnt /dev/sda

Rermark that installing grub to harddisk itself not the Ubuntu partition

Then Unmount the Ubuntu partition

sudo umount /dev/sdaX 

Now restart and test it.

  • I should have mentioned that I do not have a CD Drive. I have a USB stick that should have the most recent version of Ubuntu 14.04 on it. – Alexis K Bui Jun 12 '15 at 8:45
  • Same solution still available for using pendrive – Maythux Jun 12 '15 at 8:46
  • The command-line is GRUB is not allowing sudo commands. – Alexis K Bui Jun 12 '15 at 8:48
  • Those commands run in the live session not in the Grub menu. – Maythux Jun 12 '15 at 8:49
  • Oh, well I can't even get into a live session. – Alexis K Bui Jun 12 '15 at 8:52

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