Earlier this week I threw a 120GB SATA WD 2.5 inch HD that I had sitting around into an OWC USB 2.0 enclosure. I formated it in HFS with journaling enabled. It works just fine when I plug it into my computer but it doesn't even show up when I connect it to another mac. I can hear the drive making a soft, repeated whir and click sound but nothing else happens. I have already tried reformatting the drive since it was empty to begin with. Thoughts?