Hello. I have a new quad-G5 with 2x500GB HD. One disk is "System" (with all the system and user data on it, applications etc.) and the other one is "Empty" (nothing on it). I want to set up a RAID-1 (mirrored) array, so that System's contents are mirrored onto Empty and appear as a single 500 GB disk. I've been reading what little documentation exists but I really can't figure out how to do it. Can somebody explain exactly how I go about mirroring the boot drive? Much obliged for your kindness.