Ubuntu – Windows 10 update ruined the GRUB menu


After being forced by Windows to select 'update and shut down'; Windows killed my GRUB menu. I used to have Fedora installed but I removed Fedora and installed Kubuntu some time ago. Suddenly, after the Windows update, my Fedora kernels are listed again in the GRUB. GRUB shows up, just with the wrong kernels from a previous Linux OS. I can boot fine into Windows Boot Manager though. EasyBCD shows the following: "There is one entry in the Windows bootloader."

I already ran update-grub — no luck.

My partitions are not gone, I can use the rescue terminal fine, and grub.cfg displays something with Ubuntu, so I'm guessing that's OK as well. GRUB stays messed up with the Fedora kernels listed though. I was guessing I had to repair the boot partition using a live USB drive / CD, but I don't know how exactly.

Best Answer

Have you tried running Boot-Repair?

It worked for me with a similar issue. This software repairs common issues with boot and grub menu entries. And if it can't solve a certain issue, it outputs a report which you may paste here so that the issue may be understood better.

You may install and run it on Ubuntu through the following commands:

sudo add-apt-repository ppa:yannubuntu/boot-repair    
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

I hope it can work out the issues with kernel entries you described!