The first thing I did when I got this was buy a micro SD and change a system setting enabling it as default. Since then, I've wondered if the built in storage is still usable? I can browse it and it is empty. I tried to install a game one day with 8 gig free on my SD and the install failed from lack of space. what's happening? Any way to reclaim part of that gig for I assume System? Load me up with info!