Unknown file on C drive

Ghot said:

Did you recently do the Feature update, to Win 10 v2004?

If so, there should be a windows.old file located on the root of the C: drive.

ignatzatsonic said:

Is it confirmed that there should be a very high degree of agreement regarding reported sizes among these different programs?

I wouldn't expect identical sizes, but I don't use more than one such prog so wouldn't notice how much discrepancy is typical.

Despite the size disparity, none of those sizes are 19.4GB apart.



/e

Compumind said:

If so, there should be a windows.old file located on the root of the C: drive.

Twice Windows Update tried to give me the v2004 Feature Update (which failed twice), but during the process it had created two $xxxxxxx files on C:. I was wondering if that may be the mystery file(s).
Since the Feature Update failed, it emptied those $xxxxxxxx files, but if it succeeds, I'm wondering...

Check to see if there is a windows.old file. This can be found at C:\. If it is there, how big is it?

ignatzatsonic said:

Do you have a disk search tool other than built-in Windows? Something like Everything, that can search the Master File Table and sort by size.

Yes Everything is a good choice => Download Everything 1.4.1.969

I hope this helps!

SIW2 said:

I would suggest having a look with diskgenius. All-in-one Solution for Data Recovery, Partition Manager and Data Backup - DiskGenius

Yet another program...

I would run chkdsk c: /f, from an admin command prompt and allowing a restart check and see if that shows or changes anything.