Here's my dilemma: The standard HD that came with my mac pro was a 320GB which I thought would be big enough. I also added a 500GB in bay two for all of my work files. As I migrate all of my files onto the Mac now, I'm realizing that the 320GB is quickly running out of space with all the photos, music, etc. and my work files currently take up about 50GB so the 320Gb would have been better for that. Is there an easy way to swap my 320GB boot disk files with the 500GB data drive?