Inaccessible boot device


  1. uiookio
    Posts : 17
    Windows 10 Pro x64
       New #1

    Inaccessible boot device


    Hi. How can I fix it? I've tried to uninstall latest updates but it gives me error 0x800f082f while uninstalling. Any idea?
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  3. hsehestedt
    Posts : 4,188
    Windows 11 Pro, 22H2
       New #2

    @ItzGame, I'm a little confused by the question. How are you trying to uninstall an update if the boot device is inaccessible?

    Question 1: Is the system booting successfully? If it is, when and where are you seeing a message that says "Inaccessible boot device"?

    If the system is not booting successfully, have you checked your BIOS settings to make sure that the correct drive is selected as the boot device?

    Finally, just before you started getting "Inaccessible boot device" messages, can you think of anything that was changed? You mentioned some updates. Did the problem begin just after you installed some updates? If so, what kind of updates were these?
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  4. uiookio
    Posts : 17
    Windows 10 Pro x64
    Thread Starter
       New #3

    No, it doesn't boot. BSOD then restarts automatically.
    Yes, boot priority is correct.
    I think latest problematic update is KB4530684.
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  6. zbook
    Posts : 41,481
    windows 10 professional version 1607 build 14393.969 64 bit
       New #4

    Please perform the following steps:

    1) Find 3 flash drives that you can format (> or = 8 GB)

    2) Make tools (some or all may be used) that can be used to recover important files, test the drives, and troubleshoot

    3) On a working computer create:

    a) a new bootable windows 10 iso 1909:
    https://www.microsoft.com/en-us/soft...load/windows10
    Download Windows 10 ISO File
    Download Windows 10 ISO File
    Create Bootable USB Flash Drive to Install Windows 10
    Create Bootable USB Flash Drive to Install Windows 10


    b) bootable Ubuntu flash drive:
    Create a bootable USB stick on Windows | Ubuntu tutorials
    Create a bootable USB stick on Windows | Ubuntu tutorials

    c) Kyhi boot rescue flash drive:
    Toolkit Item: Kyhi’s Rescue Disk – Win10.Guru
    Toolkit Item: Kyhi’s Rescue Disk – Win10.Guru

    4) Report into the thread once you have made the tools
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  7. FreeBooter
    Posts : 5,330
    Windows 11 Pro 64-bit
       New #5

    The INACCESSIBLE_BOOT_DEVICE bug check has a value of 0x0000007B. This bug check indicates that the Microsoft Windows operating system has lost access to the system partition during startup.

    If the PC suddenly loses access to the system partition during startup, then the “0x0000007b” error screen is displayed and the boot process is halted.


    • Make sure Windows installed hard drive connected correctly.
    • Make sure Windows installed hard drive first boot device from within BIOS Setup Utility.
    • Enable AHCI Mode in the BIOS



    Please boot your computer with Windows Setup Media and 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 /scanos

Bootrec  /RebuildBcd


    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.



    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.



    Uninstall last installed and pending Windows updates offline using Dism command,


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

    Displays information about all packages that are installed by executing below command.


    Code:
    Dism /image:C:\  /Get-Packages
    Found all Windows updates which you can identify by there KB number and take note of the Package Identity entry update (Package) name you want to uninstall. Also take note of the installation date of the update you want to uninstall.

    For example execute following command to uninstall the KB4053577 update:

    Code:
    dism  /image:C:\   /Remove-Package  /PackageName:Package_for_KB4053577~31bf3856ad364e35~amd64~~10.0.1.0
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  8. uiookio
    Posts : 17
    Windows 10 Pro x64
    Thread Starter
       New #6

    zbook said:
    Please perform the following steps:

    1) Find 3 flash drives that you can format (> or = 8 GB)

    2) Make tools (some or all may be used) that can be used to recover important files, test the drives, and troubleshoot

    3) On a working computer create:

    a) a new bootable windows 10 iso 1909:
    https://www.microsoft.com/en-us/soft...load/windows10
    Download Windows 10 ISO File
    Download Windows 10 ISO File
    Create Bootable USB Flash Drive to Install Windows 10
    Create Bootable USB Flash Drive to Install Windows 10


    b) bootable Ubuntu flash drive:
    Create a bootable USB stick on Windows | Ubuntu tutorials
    Create a bootable USB stick on Windows | Ubuntu tutorials

    c) Kyhi boot rescue flash drive:
    Toolkit Item: Kyhi’s Rescue Disk – Win10.Guru
    Toolkit Item: Kyhi’s Rescue Disk – Win10.Guru

    4) Report into the thread once you have made the tools
    I ended up reinstalling Windows 10.
    Thank you all for your help!

    - - - Updated - - -

    Is there any update that's causing the issue? If so, please let me know so I don't install it.
      My Computer
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  9. zbook
    Posts : 41,481
    windows 10 professional version 1607 build 14393.969 64 bit
       New #7

    Please make free backup images and save the images to another disk drive or the cloud.

    (Acronis, Aoemi, EaseUS, Macrium, Paragon)

    Macrium is widely used in Ten Forums:

    Macrium Software | Your Image is Everything
    Backup and Restore with Macrium Reflect

    Your welcome.
    Please save one or more of the above tools.
      My Computer
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