Windows 10: Inaccessible boot device - after windows update (regular update)

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  1.    01 Feb 2018 #31

    Hi two questions, thanks for sending the gif. However if I cannot get into safe mode, then doing what the gif say is not clear how I could do. The only thing that is accessible is command prompt. So is there another way you are suggesting. Earlier someone mentioned to to mbr and fixing it, I wanted to ask will that make my files in accessible since my files are not backed up. Can someone clarify. Thank you.
      My ComputerSystem Spec

  2.    01 Feb 2018 #32

    zbook said: View Post
    Once the above commands are successful perform the following steps:

    1) create a brand new restore point
    2) backup all files to another drive or to the cloud
    3) make a backup image using Macrium:
    Macrium Software | Your Image is Everything
    Backup and Restore with Macrium Reflect Backup Restore Tutorials
    4) If the above commands do not fix the inaccessible boot device there are additional troubleshooting steps
    How do you create a restore point? Cannot access anything, can only access command prompt.
      My ComputerSystem Spec

  3.    01 Feb 2018 #33

    https://drive.google.com/file/d/1SVN...w?usp=drivesdk. Here is one result of command u requested.
      My ComputerSystem Spec

  4.    01 Feb 2018 #34
      My ComputerSystem Spec

  5.    01 Feb 2018 #35

    FreeBooter said: View Post
    If you don't have Windows 10 Installation DVD then click "Advanced Options" from Automatic Repair screen this will allow you to use tool at Windows Recovery Environment (WinRE) environment.

    Click Troubleshoot link.


    After you click Troubleshoot the Troubleshoot screen appears.



    Reset your PC: Reinstall Windows OS using the installation DVD or factory recover image on the hard disk drive but removes all personal data, apps, and settings from the PC.

    In Windows 10, Reset your PC gives you two option they are:

    Keep My file: Removes apps and setting, but keeps your personal files.

    Remove everything: Removes all of your personal files, apps and settings.


    Click “Advanced options” on the Troubleshoot screen to access more WinRE recovery utility’s in “Advanced options” screen.



    If you have not try below tools.

    System Restore
    : Restores Windows OS to a previous state that was without any system errors.

    Automatic Repair (Startup Repair) : Windows will attempt to diagnose and correct common boot problems It corrects issues, such as corrupt registry hives, missing system files and drivers, disk boot sector corruptions, and other startup issues.



    From Windows Recovery Environment start the Command Prompt.

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

    Following command will fixes errors on the disk and locates bad sectors and recovers readable information.


    Code:
    Chkdsk D: /r


    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.



    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.




    From Windows Recovery Environment start the Command Prompt.

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

    Following commands will repair Master Boot Record (MBR), Boot Sector and BCD Store.


    Code:
    Bootrec /FixMbr
    
    Bootrec  /FixBoot
    
    Bootrec  /RebuildBcd

    If you can please post a screenshot of above three commands output.


    Restart your computer to see boot issue resolved.
    Can the bootrec /fixmbr /fix boot or /rebuild commands make it where I cannot access my files, files? Files not backed up and thus asking.
      My ComputerSystem Spec

  6.    01 Feb 2018 #36

    Marty01 said: View Post
    Hi two questions, thanks for sending the gif. However if I cannot get into safe mode, then doing what the gif say is not clear how I could do. The only thing that is accessible is command prompt. So is there another way you are suggesting. Earlier someone mentioned to to mbr and fixing it, I wanted to ask will that make my files in accessible since my files are not backed up. Can someone clarify. Thank you.
    When did i say you need to boot computer into Safe Mode if you can you don't need to follow my Notepad trick you can use File Explorer or backup program from Safe Mode.

    I think you don't understand when i say boot your computer into Windows Recovery Environment start the Command Prompt. Please read my post 15 i have explain how to start Command Prompt from Windows Recovery Environment.

    You will launch the Notepad from Windows Recovery Environment.

    First backup your files then execute below commands:

    Please boot your computer into Windows Recovery Environment start the Command Prompt.

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

    Following commands will repair Master Boot Record (MBR), Boot Sector and BCD Store.


    Code:
    Bootrec /FixMbr
    
    Bootrec  /FixBoot
    
    Bootrec  /RebuildBcd
    If you can post a screenshot of the outputs of three commands.
      My ComputerSystem Spec

  7.    01 Feb 2018 #37

    Marty01 said: View Post
    https://drive.google.com/file/d/1SVN...w?usp=drivesdk. Here is one result of command u requested.
    Good news check disk repaired partition errors but are you sure you have executed Chkdsk command for the Windows installed partition?
      My ComputerSystem Spec


  • Posts : 17,739
    windows 10 professional version 1607 build 14393.969 64 bit
       01 Feb 2018 #38

    The two images appeared to be nearly identical:
    https://drive.google.com/file/d/1SVN...w?usp=drivesdk.
    https://drive.google.com/file/d/15Vc...w?usp=drivesdk
    It reported : chkdsk made corrections in the volume bitmap and Windows made corrections to the file system.
    So this is progress.
    Post #16 and #32 indicated if the commands are successful to restoring the operating system you must treat it as a fragile repair and backup files, make a backup image, and make a new restore point.

    When available please post the results of the HP UEFI hardware diagnostics.
      My ComputerSystem Spec


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