I have two 1 TB drives in my latest Ubuntu 11.04 system. I have a 500GB drive as the 'main' OS and home drive, and I want to setup the two additional drives as follows: /dev/sdb is mirrored on /dev/sdc On /dev/sdb,I'd like to have three logical volumes - /dev/backup /dev/media /dev/share so that if I need to grow one or more of these, I can add additional discs. I setup the RAID1 type on both discs, so that fdisk -l produces this - /dev/sda: 500.1 Gb /dev/sda1 * 1 58746 83 Linux /dev/sda2 58746 60802 5 Extended /dev/sda5 58746 60802 82 Linux swap / Solaris /dev/sdb: 1000.2 GB /dev/sdb1 1 121601 fd Linux raid autodetect /dev/sdc: 1000.2 GB /dev/sdc1 1 121601 fd Linux raid autodetect If I setup the lvm's on /dev/sdb, won't this wipe the fd that currently resides there? Is there a way to accomplish both RAID1 and LVMs on this drive or am I just doing something in the wrong way? Thanks, as always for the input. Regards Jack