SUMMARY STEPS TO REPRODUCE 1. Install KDE Neon from iso on an EFI system, 2. Choose xfs filesystem for your root partition on installer 3. After installing it, reboot OBSERVED RESULT You get grub command line. You can't boot your fresh installation manually from grub because there isn't support for xfs. So if you don't use an external tool from a cd, or reinstall neon using other filesystem as ext4 yo can't boot to your new system. EXPECTED RESULT Boot to your desktop after installation.