Hi, I have two external HD one is a 750GB Seagate FreeAgent Pro, and the other is a 1TB Seagate Xtreme. Both of these drives are giving me very strange problems. The Xtreme boots perfectly when connected to my iBook, but whenever I connect it to my eMac is isn't recognized until I unplug it and plug it back in a few times. I think this may be more the eMac than the drive, but I am not sure. The Pro is giving me more unusual problems. My old one recently failed and under warranty they sent me this replacement. Whenever I run CCC the icon resets to the Freeagent icon, which is odd because I completely erased the drive, and it shouldn't be stored anywhere. Second sometimes when I open a folder it will open and show space being used but nothing is there. So I disconnect the drive and connect again and everything is there. Weird. Could this be the eMac struggling with 2 drives? Is their something wrong? Could reformatting solve these problems? Thank You!