I recently installed Windows 8.1 on my laptop. I have the Windows folder on its own 64GB mSATA drive. For Windows 7 this was great because the Windows folder was small. With Windows 8.1 the drive is almost full, and the Windows folder takes up almost 20GB (the WinSXS folder takes up most of that space).

Is there a good reason that the Windows folder takes up so much space? Is there a way that I can cut down on some of the space that it takes up?