But when you're through with the Windows "machine, " all the files stored on the hard drive in Windows files would become invisible until the machine is started up again.

FORBES: Magazine Article

Also, as on the RT model, the Windows 8 system files take up a huge chunk of available storage.

WSJ: Review of Microsoft's Surface Pro: Hefty Tablet Is a Laptop Lightweight

While the receiver can play Windows Media music files, it doesn't understand their playlists unless you export them in a different format.

FORBES: Hub Dreams