I have a Hyperv virtual machine computer where the hard drive size is 1.4TB, but with only 19GB of free space. However when I open the C drive and select all the foloders in the root directory of C drive, I see 868GB in size including 18GB Paging file. So if I do the math, I should see almost 500GB free space. But it only shows 19GB free. I also discovered that space allocated for Shadow Copy Storage is about 40GB.
So there is something that is taking up space. How can I find out?