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Apparently, ubuntu 18.04 has decided to make system changes without asking.

One of these was a change from Grub2 64 bit which was fine, to shim which has now locked up my computer and made it unusable. Login does not work. Boot gives error message "failed to set moklistrt"

Since I can not login, how can I use live boot cd to repair this?

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  • Forgot to include running on AMD 8300 8 cores, 240 GB SSD, 16 GB ram, /home on 3 TB hd.
    – CPUDave
    Jun 10, 2021 at 18:40
  • I didn't get this change on my 18.04 UEFI system. There was a grub-efi-amd64* update on 6/4, but it did not cause any problems.
    – Organic Marble
    Jun 10, 2021 at 20:19
  • Thanks, not sure what is wrong here but even a full grub-install did not fix it. When booting, I do not get a boot menu screen, it just goes straight to the error, then boots ubuntu and the login screen comes up but I can not login, it just reloads the login screen again..
    – CPUDave
    Jun 11, 2021 at 17:31
  • Did a complete reinstall, the same problem. I did leave out an important bit of information. The /home directory is reassigned to a partition on another drive in fstab 18.04 new install boots with /home on the new drive but the problem appears again when /home in fstab is pointed to the old /home partition.
    – CPUDave
    Jun 13, 2021 at 2:03
  • Please edit your question and include the full output of sudo blkid and the full contents of /etc/fstab/.
    – Organic Marble
    Jun 13, 2021 at 2:41

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