You have yourself a Loadiine format game Loadiine was the first hack for the Wii U. It allowed you to play Wii U games on the sd card. Some of the games didn't work well some had slower load times etc... If you want to install to an external hard drive or internal you need a WUP Installable format. Best bet is to google "Reddit Wii U Usb Helper workaround" get that program up and running and you can download any Wii U game from it that will let you install to hard drive. You still have to put the game initially on the sd card to install it to the hard drive with WUP Installer GX2, which is an app you add to WiiU/apps and use whatever method you use to access Homebrew menu and use it from there.