Windows 8 and 8.1 Forums


Check Disk in Win 8.1 - Why does it hide what it's doing?

  1. #1


    Posts : 93
    Windows 8.1 Pro 32-bit

    Check Disk in Win 8.1 - Why does it hide what it's doing?


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    I'm running Check Disk in Win 8.1, on a 160GB drive.

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    From an elevated command prompt . . . CHKDSK C: /X /R . . . then do a Restart

    /x . . . Forces the volume to dismount first, if necessary. All open handles to the drive are invalidated. /x also includes the functionality of /f.

    /r . . . Locates bad sectors and recovers readable information. The disk must be locked. /r includes the functionality of /f, with the additional analysis of physical disk errors.

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    QUESTION: How do you know if it's necessary, or not, to use the /x parameter?

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    After about 15 minutes, it gets to 13% . . . and stays there for 1 hour and 16 minutes . . . at which point - it jumps to 100%, and the computer restarts.

    QUESTION: Why does it no longer show you what's going on? There is just a black screen, with white text, and a percentage completed. Is there a way to see where it is in the process?

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    C: / Properties / Tools / Error checking . . . This takes one minute. I thought it was a replacement for the DOS based Check Disk.

    I have found that "Error checking" does not reveal some un-readable parts of the drive - Avast found them, and said un-readable . . . I ran ChkDsk, which repaired them, and Avast was then able to read a file.

    "Error checking" takes 1 minute vs. 1 hour 16 minutes for a Check Disk. It looks like "Error checking" is done perpetually, and will say something if it finds an error.

    QUESTION:

    1.) Do you think that ChkDsk might only be necessary once every 6 months now? Or only once per year?

    2.) I see a log for Error Checking in the Event Viewer . . . but, I don't think I see anything for the DOS based Check Disk. Am I right? Or could that be somewhere else?

    3.) Is there a good alternative to Check Disk, that lets you see what's going on?

      My System SpecsSystem Spec

  2. #2


    If you enter "chkdsk /?" at the admin command prompt, you will get a list of available options, including /v for more verbose output. There is even an option to allocate more threads for chkdsk, to help speed up an active scan.
      My System SpecsSystem Spec

  3. #3


    Posts : 93
    Windows 8.1 Pro 32-bit


    I just learned this in Win 8.1

    Right-click on the command prompt Title bar / Edit / Mark
    Put the cursor at the beginning of what you want to copy
    Drag to highlight what you want

    Right-click on the command prompt Title bar / Copy
    . . . and paste where you want (ie. below)

    * * * * * * * * * * * * * * * * * * * * * * * *

    C:\>chkdsk /?

    Checks a disk and displays a status report.

    CHKDSK [volume[[path]filename]]] [/F] [/V] [/R] [/X] [/I] [/C] [/L[:size]] [/B] [/scan] [/spotfix]

    volume . . . . . . . . Specifies the drive letter (followed by a colon), mount point, or volume name.

    filename . . . . . . . FAT/FAT32 only: Specifies the files to check for fragmentation.

    /F . . . . . . . . . . Fixes errors on the disk.

    /V . . . . . . . . . . On FAT/FAT32: Displays the full path and name of every file on the disk. On NTFS: Displays cleanup messages if any.

    /R . . . . . . . . . . Locates bad sectors and recovers readable information (implies /F, when /scan not specified).

    /L:size . . . . . . . .NTFS only: Changes the log file size to the specified number of kilobytes. If size is not specified, displays current size.

    /X . . . . . . . . . . Forces the volume to dismount first if necessary. All opened handles to the volume would then be invalid (implies /F).

    /I . . . . . . . . . . NTFS only: Performs a less vigorous check of index entries.

    /C . . . . . . . . . . NTFS only: Skips checking of cycles within the folder structure.

    /B . . . . . . . . . . NTFS only: Re-evaluates bad clusters on the volume (implies /R)

    /scan . . . . . . . . .NTFS only: Runs a online scan on the volume

    /forceofflinefix . . . NTFS only: (Must be used with "/scan") Bypass all online repair; all defects found are queued for offline repair (i.e. "chkdsk /spotfix").

    /perf . . . . . . . . .NTFS only: (Must be used with "/scan") Uses more system resources to complete a scan as fast as possible. This may have a negative performance impact on other tasks running on the system.

    /spotfix . . . . . . . NTFS only: Runs spot fixing on the volume

    /sdcleanup . . . . . . NTFS only: Garbage collect unneeded security descriptor data (implies /F).

    /offlinescanandfix . . Runs an offline scan and fix on the volume.

    The /I or /C switch reduces the amount of time required to run Chkdsk by skipping certain checks of the volume.

    C:\>

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    I have NTFS

    /V . . . . . . . . . . On FAT/FAT32: Displays the full path and name of every file on the disk. On NTFS: Displays cleanup messages if any.

    I was using this syntax with Defrag in Win XP, to defrag external hard drives. Yes, maybe that would work if I changed it a bit, thx!

    C:\WINDOWS\system32\defrag.exe m: -v>"c:\Documents and Settings\Administrator\Desktop\defrag m.txt"

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    Any idea when /X applies?

    /X . . . . . . . . . . Forces the volume to dismount first if necessary. All opened handles to the volume would then be invalid (implies /F).

    * * * * * * * * * * * * * * * * * * * * * * * *

    /perf must allocate more threads, never heard of that, thx!
      My System SpecsSystem Spec

  4. #4


    Posts : 93
    Windows 8.1 Pro 32-bit


    I'm going to try this next time:

    C:\>chkdsk.exe c: /x /r /perf -v>"c:\Users\User\Desktop\chkdsk c.txt"

    I think /v might be different between Defrag and Chkdsk.
    No mention of using a dash with it in this article, like I found with Defrag:

    http://technet.microsoft.com/en-us/library/cc730714.aspx
    /v . . . Displays the name of each file in every directory as the disk is checked.

    This could turn out to be a big file, if it works the same.
    Maybe it just works to flash the info on the screen, and this would be how to do it:

    C:\>chkdsk.exe c: /x /r /perf /v
      My System SpecsSystem Spec

  5. #5


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


    I just learned this in Win 8.1

    Right-click on the command prompt Title bar / Edit / Mark
    Put the cursor at the beginning of what you want to copy
    Drag to highlight what you want

    Right-click on the command prompt Title bar / Copy
    It is a little faster this way:


    1. You can right click any where->Mark
    2. Put cursor and drag->then hit <ENTER> will copy


    In addition:
    F3:
    Pastes the last executed command
    F4: Deletes current prompt text up to the entered character
    F5: Pastes recently executed commands (does not cycle)
    F6: Pastes ^Z to the prompt
    F7: Displays a selectable list of previously executed commands
    F8: Pastes recently executed commands (cycles)
    F9: Asks for the number of the command from the F7 list to paste
    UP/DOWN Arrow: to move to previous/next command
      My System SpecsSystem Spec

  6. #6


    Posts : 93
    Windows 8.1 Pro 32-bit

    New CMD Prompt options


    Thanks! When did they improve it so much?
      My System SpecsSystem Spec

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