Running out of space on the C Drive

 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?

Thanks.C DriveC-Drive-Folders.PNG
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
have you used Treesize to break it down.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
sgleeAuthor Commented:
Let me try "Treesize".
sgleeAuthor Commented:
It shows that C:\Data\Invoice\b folder is taking up 289.4GB.  Thank you for the suggestion.
I have opened a question about this particular folder "deletion" issue on EE:

TreeSize is a wonderful software!
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
and it' s FREE!

very good you've found your missing space...
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.