Recently some of my Wii U game disk stopped Working,so I decided to start backing them up with wudd but I didn t have enough space in my tiny usb stick.I decided to upgrade it with a hard drive but after some research I found out that there were some constraints such as the hard drive had to be plugged in with an external source of power to work correctly or that the maximum was 2 terabyte or the wiiu won’t recognize it,or apparently some compatibility issues with some hard drives.