Dual Boot Windows 10 & 11 Boot issue

Warewasher2025 · Nov 21, 2022

Hi all. I'm running a fresh copy of Windows 11 22H2 on my new NUC 11th Gen Intel(R) Core (TM) i5-1135G7 @ 2.40GHz 2.42 GHz.
The main drive is a 1 TB M.2 NVME. There is room for another SSD so I cloned my Windows 10 drive from my old NUC using Macrum Reflect.
The clone completed successfully but after installed in my NUC Windows 10 won't boot. Since I still have a lot of data on the Windows 10 drive I really don't want to re install Windows 10. And I have Easy BCD installed so that I can boot to either drive. Is there a simple way to correct the boot issue on the windows 10 drive?
The error black screen says a file is missing? I thought by cloning the boot record would clone from the old drive.
Thanks
Dave

WAI · Nov 21, 2022

Have you tried to repair it with the windows 11 setup usb? "11 can repair WiN7/8/10"

Warewasher2025 · Nov 21, 2022

Yes I did. No luck!

NavyLCDR · Nov 21, 2022

We need to see a screenshot of disk management, please.

How to Post a Screenshot of Disk Management

How to Post a Screenshot of Disk Management at Ten Forums

www.tenforums.com

Warewasher2025 · Nov 22, 2022

Here is my disk layout. I think I see that I'm missing the boot partition for windows 10 ????

NavyLCDR · Nov 22, 2022

In a command prompt with admin privileges run:

bcdboot D:\Windows /d /addlast

Reboot the computer.

Warewasher2025 · Nov 22, 2022

Attached is the response after I entered the comand

NavyLCDR · Nov 22, 2022

You need to add a space between the two options. /d /addlast

Warewasher2025 · Nov 22, 2022

Yes that worked. Now everything is booting as it should. But now I have several entries in Easy BCD. Is it safe to delete all these extra entries?
Thanks, Navy, for your help. This site is the best

NavyLCDR · Nov 22, 2022

The problem now is that you have two EFI System Partitions and we don't know which one the computer is booting from. Open a command prompt with admin privileges again and run:

diskpart
list volume

You should see two volumes with FAT32 file systems. One will be marked System that your computer is booting from. Select the other 100 MB volume and delete it's matching partition:

select volume # <- replace # with the actual number for the second FAT32 partition not marked as system
delete partition override
Exit

See if that clears up all the extra entries in Easy BCD.

NavyLCDR · Nov 22, 2022

Here an example from my computer:

Code:

Microsoft Windows [Version 10.0.22621.819]
(c) Microsoft Corporation. All rights reserved.

C:\Windows\System32>diskpart

Microsoft DiskPart version 10.0.22621.1

Copyright (C) Microsoft Corporation.
On computer: RAIDER

DISKPART> list volume

  Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
  ----------  ---  -----------  -----  ----------  -------  ---------  --------
  Volume 0     D   Data         NTFS   Partition    945 GB  Healthy
  Volume 1     R   RECOVERY     FAT32  Partition   8191 MB  Healthy
  Volume 2                      FAT32  Partition    100 MB  Healthy    Hidden
  Volume 3     E   Windows2     NTFS   Partition    128 GB  Healthy
  Volume 4     C   Windows 11   NTFS   Partition    336 GB  Healthy    Boot
  Volume 5                      FAT32  Partition    100 MB  Healthy    System
  Volume 6                      NTFS   Partition    941 MB  Healthy    Hidden

DISKPART> select volume 2

Volume 2 is the selected volume.

DISKPART> delete partition override

DiskPart successfully deleted the selected partition.

DISKPART>Exit

Warewasher2025 · Nov 23, 2022

I did manage to figure out which Windows 10 was booting, and I removed the "dead" entry from Easy BCD. But I still have several odd entries in the Easy BCD menu. I'm considering uninstalling Easy BCD and leaving it to Windows boot manager. I'm a little apprehensive about doing that as I don't want to screw up the booting process again. Your thoughts???
Report Edit Delete

W
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