It's been about 3 weeks since I got my Mac Pro, and I've learned a massive amount about the Apple world. I've come up with a hairbrained idea, and I want to see if this will work how I think. Okay, I have the 250gig drive that came with it, a raptor150, and a pair of 320's, so all my bays are full. I got the raptor for photoshop scratch. Well, with 5 gigs of ram, in the 3 weeks of normal office use, I am not sure it's hit the scratch disk once. My files are all web-sized, so we're talking PSD's that are 800x800 at 72dpi, and then tons of smaller images under 100k each usually. Having learned that after using my RAM, photoshop will offload to the scratch, but since I have 5 gigs of ram OSX puts the "scratch" stuff onto more ram. So I never really use the Raptor because I have alot of ram, and very small files. So, I am feeling the raptor is going to waste. So my idea was to take it (its blank) and put it in the first drive bay, and then either: 1) install OSX fresh onto it, and just reinstall my apps, OR... 2) use SuperDuper to copy my System250 drive to the raptor, and then select the raptor as the system boot drive. I know that installing OSX fresh onto the raptor would work, but that's time consuming, reinstalling all my apps and tracking down all my serial numbers and such. Especially since the 250gig drive is totally up to date and has the working OS right there. So, could I really use Superduper to clone the system drive to the Raptor, and then just put the raptor in bay 1, and it will boot to that? If I pull the existing system drive out, what tells the machine to boot to the raptor? And also, can I move a working OS to a different physical drive without ill effects, like volume names and such not lining up? How would I go about accomplishing this idea?