Windows 10: Windows storage miscalculation/ missing space

Windows 10 gave me a storage warning and I went on a rampage deleting unnecessary files on my laptop. I however noticed in my storage settings that temporary files were taking up a lot of space. Investigating further, the overall numbers do not seem to match up with what is indicated once I open the temporary files. It’s seems about 100gb is missing somewhere.What could be the problem here?

:)

 

Windows storage spaces data missing for no reason

I can't recall seeing anything like this before, although various issues related to Storage Spaces have been reported.

Recovery
One difficulty could be this:

You could try this trial software:
Storage Pool: How to recover data from Windows 10 Storage Space?

There is expensive data recovery software available to support Storage Spaces, suggesting a difficulty here. One person suggested these had been found helpful with S. Spaces:
ReclaiMe Storage Spaces Recovery Software
R-Studio Help - Introduction to R-Studio
and there's this:
Effortless data recovery from complex RAID

http://www.storage-spaces-recovery.c...ery-manual.pdf

- note the reliance on metadata.

Metadata
Storage spaces use metadata. I haven't yet found quite how or what this is used for, but it's another possible vulnerability.
https://docs.microsoft.com/en-us/win...-spaces-states

This gives a variety of Powershell commands some of which you might use to interrogate your Storage Space to determine more about its status.

Configurations: which of these 3 configurations is yours?
How to Use Windows 10’s Storage Spaces to Mirror and Combine Drives

Are you using NTFS or ReFS?

The most basis seems to be simple, and NTFS- whilst the others provide some protection and resiliency.

I think elementary drive failure has been pretty much ruled out.

Bottom Line
A few people who've used this and had problems have vowed 'never again'.

 

Windows storage spaces data missing for no reason

Here's the results from Hard Disk Sentinel:

 

Windows storage spaces data missing for no reason

Hi, given the anomalies, whilst you say there's no physical damage- I assume you've run some kind of disk check- I suggest you get a copy of Hard Disk Sentinel (SSDs too) - trial- and run that. Best instant appraisal right on its GUI I know of.

Click the tab for each disk to see the report.