Im using an external hard drive with 500 GB and I loaded up a wii game to the external using WBFS manager. After I got wiiflow to my SD card I went to homebrew and accessed wiiflow. I got a message that said "please plug a usb hdd on port 0 or press reset." Am I suppose to add a file to my SD card so it can read the external? I plugged in my external where it was circled in the picture.