Disk D space is decreasing day and day!

A strange thing, I found some of my co-works PC(Dell 3080) disk D space is decreasing day and day.
OS:Windows 10 Pro
Disk D has a total of 135G space, all of files only used 9G, but the free space only 92G. I checked no hidden files, no virtual memory settings, no system restore settings, close Windows update.

The currently solution is move disk D files to disk C and format D, but I want to find the root cause.

Do you know why?

Thank you so much.

dalchina said:

Hi try using Wiztree (free) to examine disk space usage.

How is D: used? What sort of files are on it?

And as a matter of routine, run a disk check- Hard Disk Sentinel is excellent- simply launch it and look at its GUI. Green is good.



You can instantle see where most of the space is used.

Hi,

Thanks for your replied so quickly.

Disk D placed some files which user created by himself, no Windows or application files.

I will try Wiztree later and updated.

Thank you so much.

The issue has been fixed, I found "System Volume Information" directory used many of disk space via WizTree tool, it's system recovery data, just removed and ok now.

Thank your guys.