Windows 10: CHKDSK doesn't display correct percentage when running.

  1.    11 Jun 2018 #1

    CHKDSK doesn't display correct percentage when running.

    Noticed that when I run the Check Disk utility on the target machine the percentage indicator doesn't display the correct percentage.

    It usually freezes at 10% or an arbitrary number and then appears to complete.

    What is causing this?
      My ComputerSystem Spec

  2. Posts : 20,757
    windows 10 professional version 1607 build 14393.969 64 bit
       11 Jun 2018 #2

    The above is normal behavior for chkdsk when run from administrative command prompt or administrative powershell.
    It will run up to a number in the low teens and remain there until complete.

    In contrast when chkdsk is used in the Windows RE (recovery environment) it will typically display ETA.
      My ComputerSystem Spec

  3. axe0's Avatar
    Posts : 13,706
    Windows 10 Pro
       12 Jun 2018 #3

    Chkdsk has 5 phases it verifies:
    1. file system structure,
    2. file name linkage,
    3. security descriptors
    4. used space
    5. free space

    The first 3 are done in mere seconds, hence why the percentage increases very fast.
    The last 2, verifying all sectors in the used space and free space is what's taking long and why it looks like chkdsk is freezing.
      My ComputersSystem Spec

  4.    12 Jun 2018 #4

    Excellent commentary axe0. I always wondered why ChkDsk always runs up to 10% very fast, and then just seemed to hang. Now, I know!
      My ComputerSystem Spec

  5. axe0's Avatar
    Posts : 13,706
    Windows 10 Pro
       12 Jun 2018 #5

    Glad I could help
      My ComputersSystem Spec


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