Just to let you guys know, it appears the WiiU USB system lock is tied to not only the HDD, but the usb controller as well. Example: I had one of those quick connect USB power to 2.5" sata adapters while I waited for my proper 2.5" enclosure to show up. Did the full USB to USB drive copy from data management from a smaller drive. When the enclosure came, I popped the USB drive into it and the WiiU DID NOT RECOGNIZE it. Put it back into the quick adapter and it found it just fine. On the flip side, I threw the original HDD I was copying FROM, into the quick adapter, same thing. Popped it back into the original adapter I copied it from and it detected again just fine. So just FYI, if you format and install a USB HDD for use in the WiiU, do NOT put the drive into another enclosure. It WILL NOT detect.