I have just added a 500GB internal HD to my MacPro. One thing that is really annoying is that the drive keeps putting itself to sleep. It is especially annoying as I have all my music on the drive and if I pause my music for a few minutes I get a 10 second lag before the music starts again. Is there anyway of changing this? Thanks, EDIT: I think I have just found the solution in the energy saving pane, I will see if this works on a non-boot drive.