Windows 10: The boot configuration data store could not be opened. The volume for a file has been...

Hello to everyone.


At the beginning I'd installed windows 10 with the legacy BIOS-MBR boot mode,but since I needed a Windows 10 installation that was able to boot using the EFI partition style,I have converted the partition scheme from MBR to EFI with a tool and after this operation I have reinstalled Windows 10 from an old backup. This backup comes from the old BIOS/MBR installation of Windows 10. When I tried to boot Windows,I realized that it was not able to do that no error message.but blinking cursor. because the EFI partition didn't exist. So,I have created a new FAT32 partition and I have repaired the EFI partition following this guide :



How to Restore Deleted EFI System Partition in Windows 10? Windows OS Hub



it worked,infact I can use Windows 10 again,but only partially. Infact,since I need to put the "TESTSIGNING ON",when I give this command


Bcdedit.exe -set TESTSIGNING ON



I get this error :



The boot configuration data store could not be opened. The volume for a file has been externally altered so that the opened file is no longer valid.


I tried a lot of methods to fix it,but right now unsuccesfully. Can someone help me ? thanks.

:)

 

bcdedit: The boot configuration data store could not be opened

I used Macrium Reflect to clone a disk onto another disk and now all BCD data has disappeared. When I run bcdedit, I get this:

The boot configuration data store could not be opened.
The system cannot find the file specified.

EasyBCD doesn't find a file either.

Should I run bootrec /rebuildbcd?

Or do I have to do the sequence of:

bootrec /fixmbr
bootrec /fixbcd
bootrec /scanos
bootrec /rebuildbcd

Any other ideas before I run the above?

Also x:\boot\bcd is missing on all 3 disks that are bootable with Windows 10 (they are all clones).

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And these are the bootable disks, C:, G: and F:





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There is also this procedure:

How to Rebuild the BCD in Windows


and this:

Windows 10 doesn't boot anymore after flagging partion as active

and this:

Which tool to recover the EFI partition? Booted into Rescue Disk

 

bcdedit: The boot configuration data store could not be opened

It was done in the post #1 above.

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do you think that's going to rebuild the BCD store issue?

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Boot Configuration Data file is missing some required information WINDOWS 10

Boot Configuration Data file is missing some required information

Upon reboot, I ge the following message:
"Recovery
Your PC needs to be repaired
The Boot Configuration Data file is missing some required information.
File: \BCD
Error Code: 0x000000d

You'll need to use the recovery tools on your installation media, If you don't have any installation media (like a disc or USB device), contact your system administrator or PC manufacturer."

I've followed steps of doing bootrec/rebuildbcd - it says "add installation to boot list? Yes(Y)/No(N)/All(A) - I've tried to select Yes and All but it comes up with the requested system device cannot be found.

I really don't want to lose my data so any suggestions would be great?

**Moved from: Windows / Windows 10 / Install, upgrade, & activate / PC**