>>>>> On Fri, 17 Mar 2017 16:47:10 +0100, Michael Schneider 
>>>>> <mich...@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

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