I am in the process of setting up my system partition on an SSD drive. Working towards this I have bought a second (rotating) hard drive which will form the basis of a RAID1 array for /home. I have managed to create an encrypted RAID1 array comprising a single drive, onto which I have copied /home. Previously: /dev/sda1 / /dev/sda2 /home Now: /dev/sda1 / /dev/sda2 not mounted (contains old /home) /dev/sdb1 -> /dev/md0 /home When I have re-installed Leap 42.1 onto the SSD, I want to reformat the whole of sda and add it to the md0 array, but I'm not sure of the sequence of steps. Do I just repartition it in YaST to create a new sda1 using the whole disk? If so, which filesystem type should I choose (Linux native, Linux RAID?). Do I format it before adding it to the array (the partition already in the array is formatted as ext4)? Do I have to set up encryption on the new partition, or will this happen automatically when it joins md0? md0 was created using --force as there was initially only one device. Can I add the next device using mdadm --grow --add? Many thanks, Bob -- Bob Williams System: Linux 4.1.20-11-default Distro: openSUSE 42.1 (x86_64) Desktop: KDE Frameworks: 5.21.0, Qt: 5.5.1 and Plasma: