Hi there! Im using protools 6.4 with a Digi 002 rack in a home studio. Im running an iMac G5 and have purchased an external harddrive where I want to be sending my raw audio data. Protools however, will not recognize this removable media as a "Recording Volume". How do I format this unit so I can use it during real-time recording? Or is this a software conflict? please advise!