Windows 8 and 8.1 Forums


Action Center often scans for disk errors

  1. #1


    Posts : 214
    Windows 8.1 x64 with 8.1 Update

    Action Center often scans for disk errors


    Hi

    I have W8 x64, Action Centre scans for drive errors at least once a week,
    when I run

    fsutil dirty query C:

    I get a "not dirty" on all my Hard drives, why does Action Centre want to
    check so often, I cannot find any task in Task Scheduler related to this.

    Thanks for any help.

    Regards

    Daniel

      My System SpecsSystem Spec

  2. #2


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    The process is C:\Windows\system32\MSchedExe.exe, set to run Automatic Maintenance at 3AM everyday by default when you install Windows. When run, will carry out task like security updating and scanning, Windows software updates, Disk Defragmentation, Disk Volume Errors, System Diagnostics, etc... so perhaps it finds some bad blocks on your hard disk and try to fix it. I suggest that you run chkdsk C: /r /f once. /r will mark all bad blocks and record in the MFT to prevent Windows from using them.

    Fsutil dirty query C: only tells you whether the dirty bit on Volume C is set or not. If it is set ( fsutil dirty set C: ), chkdsk will run when you restart Windows.
      My System SpecsSystem Spec

  3. #3


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Quote Originally Posted by topgundcp View Post
    Fsutil dirty query C: only tells you whether the dirty bit on Volume C is set or not. If it is set ( fsutil dirty set C: ), chkdsk will run when you restart Windows.
    Hi

    I do not understand this bit, I was told that if there are no errors on the disk it will report as not dirty so running chkdsk is not required.

    Cheers

    Daniel
      My System SpecsSystem Spec

  4. #4


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    I do not understand this bit, I was told that if there are no errors on the disk it will report as not dirty so running chkdsk is not required.
    EDIT: You are right if there's no error, However, Automatic Maintenance might have raised this bit when checking for disk error due to bad blocks on the HD. If they are not used then everything is fine. That's why I suggest you to run at least once: chkdsk /r /f c:

    Try this yourself: fsutil dirty set C: then restartt your Windows, chkdsk will be running
      My System SpecsSystem Spec

  5. #5


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Hi

    thanks for the explanation.

    This is where I am now, I ran chkdsk /r /f in dos from the W8 install disk repair options,
    but it is asking me if I want to unmount the disk so it can complete the scan.

    What happens if I unmount the disk, will I still be able to use it when the scan is
    complete and the errors fixed?

    Appreciate you help.

    Regards

    Daniel
      My System SpecsSystem Spec

  6. #6


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    This is normal. It means that during the scan you won't be able to use or access it. After the scan, it will be back to normal.
    Cheers !!!
      My System SpecsSystem Spec

  7. #7


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Great, thanks for your help.

    I'll let you know what happens.

    Regards

    Daniel
      My System SpecsSystem Spec

  8. #8


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Hi

    I ran chkdsk /r /f and errors were found, the text was "windows replaced bad clusters in file (number) of name
    \windows etc"

    Is this a software error or does this mean my Hard Drive is damaged or faulty?

    Thanks

    Daniel
      My System SpecsSystem Spec

  9. #9


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    No HD's are perfect and they all tend to have some bad spots. What /r does is scanning your whole disk and marks all the bad spots and stores them in the MFT (Master File Table) so that Windows will not use it. As long as this is done then you are OK.

    Since it found some errors and happened in Windows folder, you might have some corrupted system files so next step is to open the elevated command prompt and run couple of commands:


    1. dism /online /cleanup-image /restorehealth
    2. sfc /scannow ---> you might have to run this multiple times until you get: Windows did not find any integrity violation.
      My System SpecsSystem Spec

  10. #10


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Hi

    I am running the suggested processes now and will report back when completed.

    Regards

    Daniel
      My System SpecsSystem Spec

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