I just ordered this hard drive. http://www.amazon.com/gp/product/B00E83X9P8/ref=oh_details_o04_s00_i01?ie=UTF8&psc=1 And yes, I also have the Y cable. http://www.amazon.com/gp/product/B005M0ICG2/ref=oh_details_o05_s00_i00?ie=UTF8&psc=1 I already tested this drive on my Wii (with usb loader gx) And it worked fine. Launches both Wii and gamecube games. I plugged it into the Wii U with Y cable and it detected it. I know this because I got the message saying please format the hard drive (of course I didn't). I go into vWii and launch the homebrew channel. Once again it detects it because it loaded all the apps that were on the drive. The problem is when I launch usb loader gx, it doesn't detect the drive. It says waiting for HDD: 20 seconds left. Then after that it says mounting usb port to 1. After that it loads and the games don't show up. I went into settings and to hard drive settings. At the top it says: Game/Install Partition Not Initialized. What should I do?