Or do I have to first create a (failed) array with mdadm ?
Hi, assemble fail raid first: #mdadm -A /dev/mdX /dev/sdX /dev/sdY then check status: #cat /proc/mdstat or #mdadm --detail /dev/mdX If mdam does not start then you could use -f (force). After properly assembled raid you could mount it: #mkdir /recover #mount /dev/mdX /recover