For those of you who upgraded a Win 8.1 system to Win 10 during the free upgrade period, have any of you noticed a surprisingly large increase disk space used after the upgrade. I have to admit I do not recall exactly how much space was consumed on drive C before the upgrade but I believe it was under 50GB. After the upgrade, right clicking on drive C and selecting Properties shows 175GB used. In contrast, a desktop system with Win 10 (from Microsoft Insider program) has 40.3GB consumed on drive C and a system upgraded from a retail version of Win 7 Pro to Win 10 Pro has about 37.8GB used on drive C.
I will list where I see major areas of disk space consumption:
Users 14.2GB
Windows 18.5GB
Windows.old 16.2 GB
Windows10Upgrade 15.4GB
Documents, Downloads, Music, Pictures, and Video account for less than 10GB.
I'm wondering whether this situation will change by itself after the 30 day period for going back to the previous version expires. At some point, the Windows.old folder can be deleted. But, that would still leave a perplexedly large amount of drive space consumed.