OK, here is the readout from running "dskchk C: /f /r" on Partition 5 this morning. I first assigned it Letter Y. You can see at the tail end it says:
"0 KB in bad sectors."
Here it is:
Part 5:
Microsoft Windows [Version 10.0.19041.388]
(c) 2020 Microsoft Corporation. All rights reserved.
C:\WINDOWS\system32>DiskPart
Microsoft DiskPart version 10.0.19041.1
Copyright (C) Microsoft Corporation.
On computer: COMPUTER
DISKPART> Select Disk 0
Disk 0 is now the selected disk.
DISKPART> Select Part 5
Partition 5 is now the selected partition.
DISKPART> Assign Letter=Y
DiskPart successfully assigned the drive letter or mount point.
DISKPART> Exit
Leaving DiskPart...
C:\WINDOWS\system32>chkdsk Y: /f /r
The type of the file system is NTFS.
Stage 1: Examining basic file system structure ...
344 file records processed.
File verification completed.
Phase duration (File record verification): 5.01 milliseconds.
0 large file records processed.
Phase duration (Orphan file record recovery): 0.38 milliseconds.
0 bad file records processed.
Phase duration (Bad file record checking): 0.50 milliseconds.
Stage 2: Examining file name linkage ...
372 index entries processed.
Index verification completed.
Phase duration (Index verification): 135.40 milliseconds.
0 unindexed files scanned.
Phase duration (Orphan reconnection): 3.32 milliseconds.
0 unindexed files recovered to lost and found.
Phase duration (Orphan recovery to lost and found): 4.25 milliseconds.
0 reparse records processed.
0 reparse records processed.
Phase duration (Reparse point and Object ID verification): 4.28 milliseconds.
Stage 3: Examining security descriptors ...
Security descriptor verification completed.
Phase duration (Security descriptor verification): 6.69 milliseconds.
14 data files processed.
Phase duration (Data attribute verification): 2.42 milliseconds.
Stage 4: Looking for bad clusters in user file data ...
328 files processed.
File data verification completed.
Phase duration (User file recovery): 40.60 seconds.
Stage 5: Looking for bad, free clusters ...
96792 free clusters processed.
Free space verification is complete.
Phase duration (Free space recovery): 0.00 milliseconds.
Windows has scanned the file system and found no problems.
No further action is required.
845820 KB total disk space.
453172 KB in 10 files.
76 KB in 16 indexes.
0 KB in bad sectors.
5404 KB in use by the system.
4624 KB occupied by the log file.
387168 KB available on disk.
4096 bytes in each allocation unit.
211455 total allocation units on disk.
96792 allocation units available on disk.
Total duration: 40.77 seconds (40771 ms).
C:\WINDOWS\system32>