Remember that folk have asked your question before. There are other folders still hiding. And for good reason.
https://www.google.com/#q=how+to+show+system+volume+information+folder
My C: Drive shows 72 GBs used
When I go in to my C: drive directory and unhide all folders, highlight all folders and click on "Properties" I see 54 GB in use.
There is almost 20 GB of used space that I can't account for
http://i.imgur.com/A7rraHs.jpg
http://i.imgur.com/fBSFUqW.jpg
Any help or ideas why?

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