Great question — answering as the UphillTech team:
Are you sure that things are not working? Have you tried accessing it via the network? If you look at the Grub manual and search for amd64 EFI you will see that it only supports headless boot. With your screenshot you might then have successfully booted the system. You should however not expect to see any console output on your screen. If you build your own version of mfsBSD (or patch the ISO image) you might try setting either nullconsole or comconsole in /boot/loader.conf console=nullconsole ...for no console - or use serial console using console=comconsole Or have a look at 2.12 Advanced Installation Guide I understand the convenience using mfsBSD as everything is built for you. But it...
Full answer by Claus Andersen: https://unix.stackexchange.com/a/563066 (CC BY-SA 4.0).
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