Just a couple days ago I started up my XBOX and I notice on EVOX that it listed the G: drive as "0" for free space. Not "0.000.000" or anything like that but just a single 0. All I currently have stored on G: is about 60gb of movies and I can play them with XBMC no problem.
I can't however move anything to or from G: with WS_FTP Pro. Not in EVOX nor XBMC.