On 8/27/2018 11:35 AM, Ralph Fox wrote:
On Mon, 27 Aug 2018 07:08:00 -0600, Ken Springer wrote:

Ran some of the typical clean up programs, found nothing. Virus scan,
SuperAntiSpyware, Adware Cleaner, and Malwarebytes. Not a single issue
found.

What about the built-in Windows Disk Clean-up?

I'm looking for ideas as to how to discover what is using up the space,
or at least telling W10 the space is in use.

Run Windows Disk Clean-up, click the button "Clean Up System Files", and
while in "Clean Up System Files" check the space used by (for example)
"Windows Update Clean-up".


To run Windows Disk Clean-up

(a) Right-click on the drive in Windows Explorer and choose "Properties".
On the Properties pop-up, "General" tab, click the button "Disk Clean-up".

or,

(b) Click on the search magnifying glass icon on the taskbar and type
"Disk Clean-up".


Don't forget chkdsk /F.
Sometimes the file map gets corrupted.