in the list of compadiable 1TB external HDS the Seagate Freeagent Goflex 9ZF2A5-500 was not on there.I went and played around with it some and found out that it is compadiable you just got to set it up alittle different. Just take and plug in the HD to the wii run the configureable USBLoader and go and tryto open a game file on the hard drive. you will get a message saying that the hD parition is not formated in a reconizable file. go back and you will see the option to format partions to wfsb pick the first partion and click format. it will now be formated to where the wii will reconize it. Warning when you plug into your PC to put a game to it u will get a message saying the HD is not formated in a reconized format do u want to format. Hit cancel. open up your wiibackup manager and put your game files on the hd like usule.