>Raid5 on n-1 disks is more like raid0.... Are you sure there? It seem to have come up as one 200GB device?
cookiemonster:~# cat /proc/mdstat Personalities : [raid5] md0 : active raid5 hdd1[1] hdc1[0] 195358336 blocks level 5, 64k chunk, algorithm 2 [2/2] [UU] unused devices: <none> cookiemonster:~# >What you can basically do is build a degraded array (using missing) >mdadm -Cv /dev/md0 -l1 -n3 /dev/hdc1 /dev/hdd1 missing Wouldn't I want -l5? >It will be like having raid0 (in terms of security) but will let you >move your existing data onto it. ...which is what I want, cause the last 200GB is the one with the data on.