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The boot configuration data store could not be opened. The requested system device cannot be identified due to multiple indistinguishable devices potentially matching the indetification criteria.

Rio Kleva 0 Reputation points
2025-02-19T09:33:24.7466667+00:00

For context:

I have two SSDs which were partitioned like:

SSD1 - Windows 10 Pro (512 GB)

SSD2 - Windows 11 Edu and Ubuntu 20.04.(1 TB)

Today I wanted to do little rearrangement of giving Ubuntu its own ssd (SSD1, with that Windows 10 would be deleted) and remove Ubuntu from 1 TB SSD.

I started the rearrangement by resizing Windows 11 partition more space thus overriding Ubuntu partition. and this is were it all went wrong. After a few minutes , screen went blank and I restarted my computer after waiting for an hour. Computer now boots in classic windows needs a repair mode(error code: 0x0000225).

After that I tried following standard procedure that windows suggests which is described in: https://learn.microsoft.com/en-us/troubleshoot/windows-server/performance/use-winre-to-troubleshoot-startup-issue Long story short it failed on step 4:

CHKDSK /f D:

This command was running for like good 20 minutes and it ended with an error (An unspecified error occurred (6e74667363686b2e 322e).

Then I "gave up" on that task and decided I would install Ubuntu on the drive where Windows 10 was located. I did that and Ubuntu is working fine. However, now Windows 11 partition can not be mounted by Ubuntu device and is not seen by UEFI firmware.

In the end I tried running:

BCDEdit(this worked earlier)

and know I am left with yet another error(which can be seen on the picture).
41a20d31-ecb8-4ba9-887c-9043487674e7

I really dont want to lose all the data I have on Windows 11 cause there is everything that matters to me.

What should I do?

Windows for business | Windows Client for IT Pros | User experience | Other
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  1. Anonymous
    2025-02-24T13:10:41.0766667+00:00

    Hello,

    1: Boot into Windows Recovery Environment (WinRE)

    Insert a Windows 11 installation USB or recovery drive.

    Boot from the USB and select Repair your computer.

    Go to Troubleshoot > Advanced options > Command Prompt.

    2: Identify the Windows Partition

    In the Command Prompt, run:

    diskpart

    list disk

    select disk X (replace X with the disk number of SSD2)

    list partition

    Identify the partition where Windows 11 is installed (usually labeled as "Primary" and has a size matching your Windows 11 partition).

    Repair the Bootloader

    Assign a drive letter to the Windows partition (if not already assigned):

    assign letter=W:

    exit

    Rebuild the Boot Configuration Data (BCD):

    bcdboot W:\Windows /s W: /f UEFI

    If the above command fails, try recreating the BCD store:

    bootrec /scanos

    bootrec /rebuildbcd

    Exit the Command Prompt and restart your computer.

    Best Regards,

    Hania Lian

    ============================================

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  2. Kapil Arya 37,691 Reputation points Volunteer Moderator
    2025-02-22T12:08:25.2166667+00:00

    Hello,

    See if this fix helps you:

    https://www.kapilarya.com/fix-the-boot-configuration-data-store-could-not-be-opened

    Let us know if this helps!

    Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.

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