If you want to utilize the HD, you'll need to softmod your Wii. The cIOS (Customized IOS) will enable USB HD capability. Of course, you'll need a compatible interface/controller (or in plain-speak, drive enclosure lol). You've updated since NSMB (whether IOS or System Menu; that title would put you @ 4.1) --- you mention having 4.3 System Menu (perhaps an online update). HBC installed in and by itself doesn't mean you're softmodded.