Recently installed Win 8 on bootcamp partition. I'd read a minimum of 20gb was necessary for the install so I sized it to 40gb. Everything installed fine. This is a basic system installation and the only additional software is firefox browser and classic shell. Bootcamp shows that almost 36gb is in use yet when I manually tally the size of the folders on the partition it comes out to less than 20gb. What am I missing here? Do I have 16gb of hidden files? Is this normal? I'm getting ready to nuke and repave to a bigger partition but I thought I'd ask here before I make more work for myself. Thanks.