What causes this "Cleaning up 12 unused index entries from index $SII of file 0x9"

Why do I always get the following Information notice about "unused index entries from index" from Winlogon under Application in my Event Viewer when I do a Check Disk?

Also, am I performing a "chkdsk /f" if I'm running Chkdsk by going to Windows Explorer, right clicking on my hard drive, choosing properties, Tools Tab, Error Checking , Check now and choosing both options?  (It always schedules on the next restart.)

      __________________________________________

Checking file system on C:
The type of the file system is NTFS.
Volume label is SQ004207P01.

A disk check has been scheduled.
Windows will now check the disk.                        
Cleaning up 12 unused index entries from index $SII of file 0x9.
Cleaning up 12 unused index entries from index $SDH of file 0x9.
Cleaning up 12 unused security descriptors
.
CHKDSK is verifying Usn Journal...
Usn Journal verification completed.
CHKDSK is verifying file data (stage 4 of 5)...
File data verification completed.
CHKDSK is verifying free space (stage 5 of 5)...
Free space verification is complete.

  77834893 KB total disk space.
  13842992 KB in 48756 files.
     16080 KB in 5274 indexes.
         0 KB in bad sectors.
    147953 KB in use by the system.
     65536 KB occupied by the log file.
  63827868 KB available on disk.

      4096 bytes in each allocation unit.
  19458723 total allocation units on disk.
  15956967 allocation units available on disk.

Internal Info:
00 1d 01 00 1a d3 00 00 c6 1b 01 00 00 00 00 00  ................
d4 02 00 00 03 00 00 00 7b 06 00 00 00 00 00 00  ........{.......
5a 16 c7 04 00 00 00 00 c0 19 81 1d 00 00 00 00  Z...............
32 40 93 0e 00 00 00 00 c8 f9 7c 00 02 00 00 00  2@........|.....
04 8a df 04 06 00 00 00 26 56 97 3e 08 00 00 00  ........&V.>....
99 9e 36 00 00 00 00 00 88 38 07 00 74 be 00 00  ..6......8..t...
00 00 00 00 00 c0 e8 4c 03 00 00 00 9a 14 00 00  .......L........

Windows has finished checking your disk.
Please wait while your computer restarts.


For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

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Answer
Answer
I googled them and results of the search seemed to suggest there was some kind of security threat.  At that time the number was significantly higher than 12.  (in the 80s and 50s.)  I thought maybe the words "security descriptors"  should concern me. 

No, it's not really a threat.  Security Descriptors are where the permissions are stored, these permissions control who can and who cannot get access to the 'object' in question.  Unused security descriptors means just that, descriptors that are not used.  The files may no longer be present or the descriptor may be otherwise orphaned, people like everything to be pristine and the error message might be annoying to see but in your case it's nothing to worry about.

What Are Security Descriptors and Access Control Lists?

John
Programmers are either not taught about Occam's razor or they forgot about it the following day.

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Just ignore these errors, there is no problem with the file system.

If you have 4 million plus files or a Master File Table greater than 4GB then there is a known problem with security descriptors and a hotfix is available for Server 2003, for Windows XP the latest Service Pack supposedly fixes this.  See here:

The CHKDSK utility incorrectly identifies and deletes in-use security descriptors

What you see is more likely the very same benign thing that Windows 2000 can also experience with chkdsk, it can be safely ignored.  See here:

Windows 2000 Chkdsk Reports Cleaning Unused Security Descriptors

John
Programmers are either not taught about Occam's razor or they forgot about it the following day.

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Last updated December 27, 2020 Views 16,317 Applies to: