i can't say that i have found the answer. i am having the same problem. I have an AsRock 990fx extreme9 and am running Win8x64 and whenever i connect the 3TB drive directly, it shows up as the GPT protected drive with the two partitions. However when i connect the same drive using my USB 3.0 docking station, it shows up right away, data intact. This is also happening on another 3TB drive that I quick-formatted using Win8: it is also coming in as a protected 2048/754GB dual partitioned drive.