An WD "blue" 3TB drive formatted to GPT (I used MiniTool) that shows correctly in Win7; 2800GB total, 760GB used, 2035 free When I tried to add 68GB of mp3's, over the Network, I received an error that I need something like 70+ GB more space. I took the drive out of the X10, connected it to a eSATA port on the from to my Tower, did the same procedure with no apparent issue. Put it back in the X10 and it appears that all is well. So what's wrong???