I was able to completely reproduce it using VirtualBox environment by installing Ubuntu from scratch with encryption enabled and then adding the second disk and enabling encryption on it manually.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1844153 Title: Manual root and boot encrypted LUKS non-lvm partition on EFI unable to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1844153/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs