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enter image description hereSome time ago I have installed Ubuntu 20.04 with full disk encryption using this guide (https://help.ubuntu.com/community/Full_Disk_Encryption_Howto_2019). Today after upgrading to 22.04 I get this error: Volume group "ubuntu -vg" not found and then drops to BusyBox. Any ideas?

Vagelis Melidonis
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  • Can you edit the question and post a screenshot of the error message (perhaps you can take a photo with your mobile phone)? – Archisman Panigrahi Aug 22 '22 at 13:42
  • I have added a photo as requested. – Vagelis Melidonis Aug 22 '22 at 14:04
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    can you try running cryptsetup now? What output do you get? see https://askubuntu.com/questions/567730/gave-up-waiting-for-root-device-ubuntu-vg-root-doesnt-exist, it is possible that somehow cryptsetup got removed during the update and now your disk can't be unencrypted. If that's the case, you will have to boot using a live USB and fix the issue – Esther Aug 22 '22 at 14:54
  • I used a live usb and chroot my system and both cryptsetup-initramfs and cryptsetup are installed. – Vagelis Melidonis Aug 23 '22 at 05:59

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After some more digging I found out that after the upgrade /etc/cryptsetup-initramfs/conf-hook file was missing the "KEYFILE_PATTERN" line. So I added it, reboot and successfully unlocked the drives.

Vagelis Melidonis
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  • I am curious how you added the line, because Ubuntu was not working? If you add that information, it would help other users who face similar issue and come here for help. – Archisman Panigrahi Aug 23 '22 at 11:18
  • I booted with a live usb and used cryptsetup to unlock my drives. Then I mounted them in /tmp and used chroot to edit the file and update initramfs. – Vagelis Melidonis Aug 23 '22 at 12:30