Windows 10: Fail to boot after Update May 2020 - Inaccessible boot device

Discus and support Fail to boot after Update May 2020 - Inaccessible boot device in Windows 10 BSOD Crashes and Debugging to solve the problem; After update in May Windows doesn't start any more. Blue screen with message above. Run any proposed ways of repairing... but didn't work.... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by RainerJordan, Jun 7, 2020.

  1. Fail to boot after Update May 2020 - Inaccessible boot device


    After update in May Windows doesn't start any more. Blue screen with message above. Run any proposed ways of repairing... but didn't work.

    :)
     
    RainerJordan, Jun 7, 2020
    #1
  2. zbook Win User

    Inaccessible boot device

    This is a Microsoft link on inaccessible boot device:
    https://docs.microsoft.com/en-us/win...le-boot-device

    It is an intermediate level link.
    There are more advanced steps that can be ran once the partition structure is known.
    There are steps for repair of the boot sector, operating system, etc.
    Sometimes this bugcheck can be caused by windows updates.

    A reset save files equivalent may be able to be performed.
    Alternatively a clean install can be performed once important files are backed up.
     
    zbook, Jun 7, 2020
    #2
  3. zbook Win User
    Update to 17063 fails - inaccessible boot device

    1) Find a flash drive that you can format ( > or = 8 GB)
    2) Create a bootable windows 10 iso:
    Download Windows 10
    4) Insert the flash drive into any USB port
    5) Open the BIOS and temporarily change boot order so that you can boot using the flash drive.
    6) When the iso loads choose language, time, currency, and keyboard, or click next
    7) In the left lower corner click "repair your computer"
    8) Click troubleshoot
    9) Click command prompt
    This should open: Administrator: X:\Windows\system32\cmd.exe > X:\Sources>

    For all of the steps please use a camera or smart phone camera to take pictures and post images into the thread.

    10) type: bcdedit | find "osdevice"
    11) This may display osdevice partition=C:
    12) type: diskpart
    13) type: list disk
    14) type: list volume
    15) look under the column heading Fs for any volume that displayed RAW instead of NTFS
    16) type: chkdsk /f /r G: (change G to the drive letter of the volume displaying RAW)
    It may display "The first NTFS boot sector is unreadable or corrupt."
    This may then convert the RAW volume to NTFS.
    17) Type: exit
    18) reboot to open the Windows advanced troubleshooting menu > command prompt > Administrator: X:\windows\system32\cmd.exe > X:\Sources>
    19) type: bootrec /rebuildbcd
    It may display:
    Scanning all disks for Windows installations.
    Please wait, since this may take a while...
    Successfully scanned Windows installations.
    Total identified Windows installations: 1
    [1] D:\Windows
    Add installation to boot list? Yes(Y)/No(N)/ALL(A):
    20) Type: Y
    The operation completed successfully.
    X:\Windows>
    21) Type: exit
    22) reboot
    See if the inaccessible boot device problem was fixed.

    If the above did not fix the inaccessible boot device the next step is to remove the recent update:
    23) Open command prompt > Administrator: X:\Windows\system32\cmd.exe > X:\Sources>
    24) From the first command displaying the partition if the drive letter is different than C: please use the displayed drive letter for the next step
    25) type: DISM /image:G:\ /cleanup-image /revertpendingactions (change G to the applicable drive letter)
    26) This should remove the latest update and fix the inaccessible boot device.
    27) If this does not fix the inaccessible boot device plan a registry repair.

    Report into the thread your progress with images of the above steps.
     
    zbook, Jun 7, 2020
    #3
  4. Ugo Lopez Win User

    Fail to boot after Update May 2020 - Inaccessible boot device

    Ugo Lopez, Jun 7, 2020
    #4
Thema:

Fail to boot after Update May 2020 - Inaccessible boot device

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