Please provide the installer logs. Option 1: boot the system (by manually mounting things from initramfs) and execute $ ubuntu-bug debian-installer, and either attach the generate apport report, or upload it to launchpad via offered means to open a new bug report.
Option 2: otherwise retrieve and attach /var/log/installer from such a system This does look like a regression from btrfs zipl-installer enablement. ** Package changed: debian-installer (Ubuntu) => zipl-installer (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1566387 Title: Can not IPL after installation (zipl-installer?) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zipl-installer/+bug/1566387/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs