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.

Question

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).

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?

Answer 1

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.

Answer 2

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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