PC boots into GRUB console after Windows update

Question

Yesterday I had to boot into Windows and when shutting down again Windows wanted to install updates (which is why I switched to Ubuntu in the first place).

Today I booted my PC and I get this screen:

Now I don't know what to do. Normally this is where the screen comes that lets me choose between Ubuntu 18.10 and the Windows Boot Manager.

https://askubuntu.com/questions/929833/how-do-i-boot-my-pc-from-grub — Alpy, Feb 25 '19 at 10:55
Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?) ps: I know you didn't install windows, the windows-update caused the same issue as if it was just installed, and this contains fixes — guiverc, Feb 25 '19 at 10:58
Another link that may be useful - https://askubuntu.com/questions/874181/windows-10-update-broke-my-mbr-grub (windows 10 update broke my mbr-grub) — guiverc, Feb 25 '19 at 11:04
Thanks for that but sadly it doesn't work, it fails at the first command — EVARATE, Feb 25 '19 at 11:16
May be best to see details, use ppa version with your live installer or any working install, not older Boot-Repair ISO: Please copy & paste link to the Boot-info summary report ( do not post report), the auto fix sometimes can create more issues. https://help.ubuntu.com/community/Boot-Repair — oldfred, Feb 25 '19 at 14:44
Please see my answer. Please remember to accept it if it was helpful. Thanks! — heynnema, Feb 27 '19 at 13:21

heynnema · Answer 1 · 2019-02-25T15:13:57.253

Windows 10 Anniversary Update, and the more recent Windows 10 Creators Update, have a really bad habit of wiping out Linux partitions on MBR disks. Microsoft has known about this bug for quite some time, but has chosen not to fix it. Sounds like you're a victim.

Recovery is possible, but it can be tricky.

Boot to the Ubuntu Live DVD/USB.

Open Software & Updates and make sure that all of your software repositories (except proposed) are enabled.

In terminal...

sudo apt-get update           # update the software database
sudo apt-get install testdisk # install testdisk
man testdisk                  # read the manual
sudo testdisk                 # start testdisk

You can also get specific instructions here: http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step

Note: after recovery, strongly consider changing your MBR formatted disk to GPT format, so future MS updates won't wipe it again.

PC boots into GRUB console after Windows update

1 Answers1