fdisk -l 2>/dev/null | egrep "Disk /|/dev/" | sed "s#^/dev/#Part /dev/#" | awk '{print $2}' | sed 's/://' | xargs -n1 -IX sh -c "dd if=X  bs=1 count=512 2>/dev/null | grep GRUB > /dev/null && echo Grub gefunden: X || echo Kein Grub: X"