Need to recover from Win 10 crash

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  1. Posts : 141
    Windows 10 and 7 dual boot
       #1

    Need to recover from Win 10 crash


    Something bad happened to my Windows 10 installation that prompted a chkdsk 5-hour massacre.

    I cannot boot to Win 10 now. When I boot to Win 7 (same disk, different partition), I can see the Windows 10 partition in file manager but I get "F:\ is not accessible, Access is denied"

    Though if I look at the same drive in the Command Prompt, I can see the file system.

    I have a Macrium full backup from this morning. Is the simplest course of action to reformat the Win 10 partition and restore from backup? Or is there a simpler recovery to try first?

    Thanks.

    Mike
      My Computer


  2. Posts : 5,417
    Windows 11 Pro 64-bit
       #2

    Any error message when you boot to Windows 10?
      My Computer


  3. Posts : 41,746
    windows 10 professional version 1607 build 14393.969 64 bit
       #3

    Please test the drive:

    a) Sea Tools bootable Long Generic test > take pictures > post images

    b) If it passes then restore an image

    c) Run chkdsk /b /v C: overnight while sleeping
      My Computer


  4. Posts : 141
    Windows 10 and 7 dual boot
    Thread Starter
       #4

    FreeBooter said:
    Any error message when you boot to Windows 10?
    No - I get the splash screen, get past those spinning dots to where you think it's going to give the login screen, but instead I get a black screen with the spinning dots. I don't know what it is doing on that screen. I left it for about 30 minutes and nothing happened.

    But I just ran chkdsk again from Win 7 and it fixed some more errors, so going to try another reboot.
      My Computer


  5. Posts : 5,417
    Windows 11 Pro 64-bit
       #5

    Make sure to let Chkdsk complete its repair also execute SFC command.

    Try Startup Repair from Windows Recovery Environment.

    Try System Restore from Windows Recovery Environment.

    Try boot into Safe Mode.

    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

    Please type below command into Command Prompt and press Enter key.

    The following command scans integrity of all protected Windows system files and repairs files with problems when possible.

    Code:
    Sfc  /Scannow   /OFFBOOTDIR=D:\   /OFFWINDIR=D:\Windows


    Please replace partition letter D: with Windows installed partition letter. When computer boots into Windows Recovery Environment (WinRE) environment the drive letter assign to Windows partition may not be C: drive letter because Windows 7, 8 , 8.1 and 10 creates a separate system partition when it's installed from scratch. The system partition contains boot files WinRE assigns the system partition the C: drive letter and the Windows installed partition will be assign any other drive letter usually D: drive letter is assign to Windows installed partition. The Bcdedit /enum | find "osdevice" command can be use to find out the drive letter of the Windows installed partition the output of the Bcdedit command is similar to this osdevice partition=D:. The drive letter after partition= is the drive letter of the Windows partition.
      My Computer


  6. Posts : 141
    Windows 10 and 7 dual boot
    Thread Starter
       #6

    zbook said:
    Please test the drive:

    a) Sea Tools bootable Long Generic test > take pictures > post images

    b) If it passes then restore an image

    c) Run chkdsk /b /v C: overnight while sleeping
    For context, I was having a good number of blue screens. I finally tested the RAM and found I had a bad stick. I believe that the sudden shutdowns from the blue screens likely caused problems. I don't expect it is the drive because everything has been stable on the Win 7 partition with the bad stick of RAM removed. But I can run tests to be sure. Why are we doing c) after a) and b) ???? Or did you mean this to be a menu of choices?

    - - - Updated - - -

    FreeBooter said:
    Make sure to let Chkdsk complete its repair also execute SFC command.

    Try Startup Repair from Windows Recovery Environment.

    Try System Restore from Windows Recovery Environment.

    Try boot into Safe Mode.

    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

    Please type below command into Command Prompt and press Enter key.

    The following command scans integrity of all protected Windows system files and repairs files with problems when possible.

    Code:
    Sfc  /Scannow   /OFFBOOTDIR=D:\   /OFFWINDIR=D:\Windows


    Please replace partition letter D: with Windows installed partition letter. When computer boots into Windows Recovery Environment (WinRE) environment the drive letter assign to Windows partition may not be C: drive letter because Windows 7, 8 , 8.1 and 10 creates a separate system partition when it's installed from scratch. The system partition contains boot files WinRE assigns the system partition the C: drive letter and the Windows installed partition will be assign any other drive letter usually D: drive letter is assign to Windows installed partition. The Bcdedit /enum | find "osdevice" command can be use to find out the drive letter of the Windows installed partition the output of the Bcdedit command is similar to this osdevice partition=D:. The drive letter after partition= is the drive letter of the Windows partition.
    Is there a way to run sfc on the Win 10 partition while booted on the Win 7 partition? Is this what you are guiding to do?
      My Computer


  7. Posts : 5,417
    Windows 11 Pro 64-bit
       #7

    You can just execute Chkdsk X: /r command, replace the X: drive letter with Windows 10 assigned drive letter.
      My Computer


  8. Posts : 41,746
    windows 10 professional version 1607 build 14393.969 64 bit
       #8

    The chkdsk switches vary. The above switches are the deepest and run time depends on the findings so its best to overnight while sleeping.
    The Long Generic is ran first to make sure that the drive has not failed a diagnostic test.
      My Computer


  9. Posts : 141
    Windows 10 and 7 dual boot
    Thread Starter
       #9

    FreeBooter said:
    You can just execute Chkdsk X: /r command, replace the X: drive letter with Windows 10 assigned drive letter.
    My question was about running sfc on Win 10 while logged into Win 7, not chkdsk.

    - - - Updated - - -

    When I get the black perpetual spinning dots screen, what is the machine doing? Should I be leaving it alone for some time? Or is it simply crashed at that poin?

    - - - Updated - - -

    zbook said:
    Please test the drive:

    a) Sea Tools bootable Long Generic test > take pictures > post images
    The Sea Tools Long Generic Test sounds the same as the Samsung Magician Full Scan. Anything against running that one instead?
      My Computer


  10. Posts : 4,702
    several
       #10

    My question was about running sfc on Win 10 while logged into Win 7
    Not from win7 as far as I know, but you could do it from win10 boot media.
      My Computer


 

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