The installation was migrated from an old system. The current host has fedora installed first so grub is maintained by it instead. Hence mounting /boit/efi doesn't seems necessary.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670222 Title: (/boot/efi not mounted) package shim-signed 1.23+0.9+1474479173.6c180c6-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1670222/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
