How to Free Over 10GB of Disk Space After Installing Windows 10’s Anniversary Update

Computer Help and Discussions Software
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More interesting information following your Win 10 Anniversary update.

"If you have a computer with a large amount of available storage, you might not even notice this useless data. It’ll stick around for 10 days until Windows automatically cleans it up. But, if you’re pressed for space, you’ll want to clean it up as soon as possible."

http://www.howtogeek.com/264534/how-to-free-10-gb-of-disk-space-after-installing-a-new-build-of-windows-10/
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CC can do it too, via ticking the Old Windows Installations option.

But it takes bloody ages.

cleanmgr does a much faster job.