Ubuntu: Fix GRUB - how to solve the problem

A common problem is that Ubuntu no longer appears to you under GRUB. In order for you to fix the problem, you need to repair GRUB to be able to boot into Ubuntu again.

How to fix GRUB for Ubuntu

The trigger for this problem is usually the installation of another Linux distribution or a subsequent installation on Windows. To fix it, you need to do the following:

1. Restart your computer and start booting from the CD. Afterwards, select "Try Ubuntu".
2. Open a terminal and type the following lines one after the other. It is important that you create the lines one below the other so that the command is executed: sudo add-apt-repository ppa:yannubuntu/boot-repair; sudo apt-get update; sudo apt-get install -y boot-repair; boot-repair
3. After you have confirmed your input, the repair program starts automatically.
4. Indicate that you want to run "Recommended Repair" - this is the default option.
5. Now GRUB should work again without errors. Check it by running Ubuntu after a reboot.

What can you do if you no longer have GRUB on media?

If you no longer have GRUB on CD, consider reinstalling it. To do this, download either the 32-bit or 64-bit file and begin the installation after you have previously deleted GRUB. This way you will avoid getting error messages again.