I have a MacPro 2.66 Quad Core. I was running out of space on my drive so I got a 1TB Western Digital Green drive and transferred all of my iTunes library on to it. My problem is that when I reboot or turn the computer off, the drive does not show up. I have to pull it out, reboot, put it back in and wait for it to recognize it and then it asks me to initialize it. I initialize, then I have to reboot and sometimes it appears and sometimes I have to go through the process again, Any ideas? I have moved it into a different bay with no change. I have also noticed that it takes my Mac forever to reboot when that drive is in and it is faster with it out. Drive going bad?