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Microsoft Windows [Version 10.0.26200.9445]
(c) Microsoft Corporation. All rights reserved.

C:\Windows\System32>chckdsk C: /scan
'chckdsk' is not recognized as an internal or external command,
operable program or batch file.

C:\Windows\System32>chkdsk C: /scan
The type of the file system is NTFS.
Volume label is OSDisk.

Stage 1: Examining basic file system structure ...
  1517824 file records processed.
File verification completed.
 Phase duration (File record verification): 15.67 seconds.
  23916 large file records processed.
 Phase duration (Orphan file record recovery): 7.89 milliseconds.
  0 bad file records processed.
 Phase duration (Bad file record checking): 0.17 milliseconds.

Stage 2: Examining file name linkage ...
  1111 reparse records processed.
  1921220 index entries processed.
Index verification completed.
 Phase duration (Index verification): 31.00 seconds.
  0 unindexed files scanned.
 Phase duration (Orphan reconnection): 2.41 seconds.
  0 unindexed files recovered to lost and found.
 Phase duration (Orphan recovery to lost and found): 0.18 milliseconds.
  1111 reparse records processed.
 Phase duration (Reparse point and Object ID verification): 5.73 milliseconds.

Stage 3: Examining security descriptors ...
Security descriptor verification completed.
 Phase duration (Security descriptor verification): 3.56 seconds.
  201699 data files processed.
 Phase duration (Data attribute verification): 0.38 milliseconds.
CHKDSK is verifying Usn Journal...
  36207392 USN bytes processed.
Usn Journal verification completed.
 Phase duration (USN journal verification): 270.36 milliseconds.
Windows has found problems that must be fixed offline.
Please run "chkdsk /f" to fix the issues.

 292397055 KB total disk space.
 279997304 KB in 619445 files.
    299512 KB in 201700 indexes.
         0 KB in bad sectors.
   1873543 KB in use by the system.
     65536 KB occupied by the log file.
  10226696 KB available on disk.

      4096 bytes in each allocation unit.
  73099263 total allocation units on disk.
   2556674 allocation units available on disk.
Total duration: 52.94 seconds (52941 ms).

C:\Windows\System32>