Disappearing hard drive space with SFC /Scannow

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  1. Posts : 24
    10
       #1

    Disappearing hard drive space with SFC /Scannow


    I am using sfc /scannow on Windows 10 Pe environment. The SFC /Scannow fails to repair the corruption.

    Everytime i use it, i notice that i am losing aobut 2 to 2.5 gb of space.

    My WINSXS is about 27 GB(is this normal?).


    Any suggestion?
      My Computer


  2. Posts : 24
    10
    Thread Starter
       #2

    May i delete winsxs? Will that cause any problem?
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  3. ignatzatsonic's Avatar
    Posts : 2,492
    Windows 10 Home, 64-bit
       #3

    NO NO NO

    Do not delete Win SXS. Leave it alone.

    Your Win SXS is much larger than mine (7 GB), but may be totally justified in your case.

    Have you run Disk Cleanup?

    You say you lose 2 GB ever time you run SFC /scannow.

    Does that mean that if you run it 40 times, you will lose 80 GB? That may be larger than your total occupied space on C.
      My Computer


  4. Posts : 24
    10
    Thread Starter
       #4

    i cannot run diskcleanup because i cannot boot to window. I am using a usb boot with window pe.

    The usb boot is the one recommended by this very forum: WINDOWS 10 PE SE boot.

    When i try to run diskcleanup from windows 10 PE SE, all it points to the recycle bin and not the window system files or temp files. Any solution?

    To your question: Yes, if i run it 40 times i will lose all the space available. At that point, i don't think windows can move or fix any files.

    Can i delete anything to recover my space from sfc /scannow?
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  5. ignatzatsonic's Avatar
    Posts : 2,492
    Windows 10 Home, 64-bit
       #5

    I know next to nothing about "Windows 10 Pe environment", as opposed to a standard Windows 10 installation per se.
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  6. Posts : 24
    10
    Thread Starter
       #6

    ignatzatsonic said:
    I know next to nothing about "Windows 10 Pe environment", as opposed to a standard Windows 10 installation per se.
    I am new at this. What do you mean standard window 10 per se?
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  7. ignatzatsonic's Avatar
    Posts : 2,492
    Windows 10 Home, 64-bit
       #7

    goldenstar said:
    I am new at this. What do you mean standard window 10 per se?
    Just that.

    A Windows 10 installation like millions and millions of people have.

    Like what you'd have if you went down to Best Buy and bought a new PC "with Windows 10".

    You are referring to "Windows 10 PE environment".

    So I assume you mean something other than a normal Windows 10 installation.

    Are you using the term "Windows 10 PE environment" for some specific reason?

    The term typically means Windows 10 Pre-installation environment"

    Windows Preinstallation Environment - Wikipedia

    Maybe you mean ordinary Windows 10. I don't know. You chose the term.
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  8. Bree's Avatar
    Posts : 20,122
    10 Home x64 (21H1) (10 Pro on 2nd pc)
       #8

    goldenstar said:
    May i delete winsxs?
    NO!!!!

    Warning
    Some important system files are located only in the WinSxS folder. Deleting files from the WinSxS folder or deleting the entire WinSxS folder might severely damage your system, so that your PC might not boot, and make it impossible to update.
    https://docs.microsoft.com/en-us/win...-winsxs-folder
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  9. Bree's Avatar
    Posts : 20,122
    10 Home x64 (21H1) (10 Pro on 2nd pc)
       #9

    goldenstar said:
    i cannot run diskcleanup because i cannot boot to window. I am using a usb boot with window pe.

    The usb boot is the one recommended by this very forum: WINDOWS 10 PE SE boot.

    When i try to run diskcleanup from windows 10 PE SE, all it points to the recycle bin and not the window system files or temp files. Any solution?
    We are, I think, talking about @Kyhi's rescue drive
    Windows 10 Recovery Tools - Bootable Rescue Disk

    Running disk cleanup from there will NOT clean up system files on you C: drive. That's because the system on C: isn't the one you are running, You are running the system on the drive you booted from. The system you are trying to repair is offline at present.

    Let's step back a few paces, you may not be taking the best route to fix your problems. What were the original symptoms that caused you to try repairing your PC in the first place? Details please.
    Last edited by Bree; 25 Sep 2017 at 15:21.
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  10. Posts : 24
    10
    Thread Starter
       #10

    Windows 10 is giving me an error when i try to load windows.

    Error: Corruption or missing files at /windows/system32/driver/pci.sys.

    I tried running sfc /scannow (with offwindir commands to point to c:\windows) in Window pre installed environment and it says it found some corruption but unable to fix some problems.

    If i am able to get sfc /scannow to fix the corruption my window would boot.
      My Computer


 
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