Thanks for the ideas!
Deleting windows.old directory saves me lot of spaces.
Now the used space is "only" 26,6 GB. It has some temporary files (1,5GB), Office(?) (600MB), Lenovo Photo Master (674...

Hi All,
My question is, how can I install Windows 10, that it uses the less disc space, it can?
My problem is, that I have laptop with 64 GB SSD, and after upgrading (from windows 8.1) to Windows...