There is no danger of bricking your Wii from this. If your USB loader app (the channel supports WiiFlow, CFG, and GX) is on the SD card, then yes it needs to be inserted. If it's on the USB HDD, then no it doesn't. The USB file structure should look like this:Originally Posted by smithbob12
[CODE]USB:/WBFS/Game Name [GAMEID]/GAMEID.wbfs]/CODE]
That will vary slightly depending on the loader you use (the one above is from WiiFlow). Also, be sure your HDD on the compatibility list.