>>>>> On Fri, 17 Mar 2017 16:47:10 +0100, Michael Schneider <michael at websigns.ch> said: > Prefix not specified (use the -p option). > Usage: /usr/bin/grub-mkimage [OPTION...] [OPTION]... [MODULES] Hi Michael this was fixed in FAI 5.3.3. See http://metadata.ftp-master.debian.org/changelogs/main/f/fai/unstable_changelog -- regards Thomas