At this point I feel I have tried pretty much everything and have spent hours and hours reading online to find a fix but cannot find a solution. Help a brother out? When I try to back up Smash Bros Brawl using Wii Flow it gives me this message - "Not enough space:7438598144 blocks needed, -2138068464 available". I have an external HDD (1tb Western Digital Passport to be specific) and have it plugged into a powered USB hub because as we all know the Wii U can't put out enough power to power such things. The USB hub uses 2 USB ports much like a Y cable to get extra power. At first I thought that was the problem, so I took the USB that is used to provide the extra power and plugged it into a wall adapter, yet still didn't work. I have the HDD formated to FAT32 using a 3rd party application which is the right format if I understand correctly. When I boot up the Wii U it says it sees the hard drive and asks me if I want to format it, so clearly the Wii U recognizes the HDD so why won't Wii Flow let me back up my games??? I have it plugged into the port furthest from the edge which I think is the right one but have tested using both to no avail.