Thanks for the screenshots. I found the problem. It only occurs in an UEFI environment.
If you boot in an EFI environment and your hostname is faiserver, then the FAI class FAISERVER is defined. In package_config/FAISERVER the package grub-pc is listed, which conflicts with grub-efi. That's why no grub is installed and your host cannot boot. Since you cannot edit the files on the ISO, you can only enter the grub menu (pressing e) and remove the part hostname=faiserver But then some other things may be missing. -- regards Thomas
