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I have a dual boot, W10 and Ubuntu 16.04. Each OS is installed on a HDD. Very often, when I quit Ubuntu or update W10, my GRUB partition is erased and I have to use boot-repair to make things back together.

Today I had the same problem after shutting down Ubuntu (properly), but there was no update from W10 nor Ubuntu. After rebooting my computer, I only had a GRUB shell. I used boot repair as usual, but now My only option in GRUB is :

EFI/ubuntu/fwupx64.efi
EFI/ubuntu/mmx64.efi
System Setup

photo

When I choose first option, nothing happen. When I choose second option, a blue screen named Shim EFI key management ask me if I want to perform a MOK management.

My boot is UEFI. I added a boot sequence for EFI/ubuntu/shimx64.efi and even EFI/ubuntu/grub.efi, but all I got is the same 2 options

  • May be best to see details, use ppa version with your live installer or any working install, not older Boot-Repair ISO: Post the link to the Create BootInfo summary report. Is part of Boot-Repair: https://help.ubuntu.com/community/Boot-Info and: https://sourceforge.net/p/boot-repair/home/Home/ Windows is known to not add back logical partitions to partition table if Windows is installed in BIOS boot mode on MBR drives. But have not seen issue on UEFI/gpt? – oldfred Aug 22 '18 at 19:37
  • I've already tried with this method https://help.ubuntu.com/community/Boot-Info And the result is the same as the iso of boot-repair – ramsey_lewis Aug 23 '18 at 08:11
  • Boot-Repair cannot fix everything, I was asking for the Summary Report it gives. Just post link to that report which has many details on your configuration. – oldfred Aug 23 '18 at 13:28
  • here http://paste.ubuntu.com/p/hgxZJn2hwq/ – ramsey_lewis Aug 24 '18 at 13:13
  • after this last boot repair, I can see my ubuntu in grub, but now i'm stuck on a black screen with : /dev/mapper/ubuntu--vg-root: clean, XXX/XXXx files, XXX/XXXX blocks – ramsey_lewis Aug 24 '18 at 13:23
  • i did sudo apt-get purge nvidia-* and now i can finally boot ubuntu. But that kind of issue often happen ! At least on my vm I could do snapshot – ramsey_lewis Aug 24 '18 at 13:53
  • You should be backing up. discussion of alternatives/strategy backups https://ubuntuforums.org/showthread.php?t=2368992&p=13677224#post13677224 & https://help.ubuntu.com/community/BackupYourSystem & https://help.ubuntu.com/community/CategoryBackupRecovery & http://askubuntu.com/questions/2596/comparison-of-backup-tools Did you install correct nVidia driver for your system? From Ubuntu repository, not from nVidia directly? – oldfred Aug 24 '18 at 14:51
  • Yes the first thing I did was to perform a backup with deja dup. I am using acronis true image on windows. It seems i cannot do incremental backup with deja dup, only full backup. For the drivers, I didn't install the nvidia driver this time, I'll use the default intel hd driver i guess – ramsey_lewis Aug 25 '18 at 08:29

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