When I install a game on USB Loader GX, it installs but never shows up. When I plug my usb into my computer and load WBFS Manager, it shows up. When I try to reinstall, it says "This game has already been installed!". This also happens with my backups. Do I need to format my usb?
Try a different Loader before you Format your HD. I find GX buggy. Try Wiiflow or configurable USB loader.