I (finally) received the new mac pro, and just tried installing the Samsung F1 Drive that has been waiting in the sideines for this Mac Pro. When I installed the drive and boot up the Mac, it hangs in the opening apple logo screen with the swirling . So I had to finally cut power and shut down. I took the drive out again, re-inserted it, my mac starts up fine, and I even had a chance to format the drive. I did it as OSX extended (journaled) is this correct? Then I restarted, and am getting the hang-up on the start-up screen again. What am I doing wrong? Do I need to set the jumper cables? I can't seem to find them if so, please help!?!