Speaking of the windows.old folder, would it be safe to delete it? I do not think that I would want to go back to a previous build anytime in the future since I already have an ISO file of the same.

I just upgraded to TH2 from Win 10 Pro. I noticed that my disk usage is near 99% for the past 20 mins. It keeps fluctuatiing between 10 to 99. Normally my disk usage stays at 0. May be this might be...