Windows 10: Create a VM from W8.1Pro before upgrading to W10

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  1.    05 Jun 2016 #21

    VMNewbie said: View Post
    I appreciate your helps and want to make sure I understand what you mean, so to clarify:
    USB drive is D:, on it resides the VHDX file. When I mount the VHDX file it is mounted as E:

    Thus, if I understand you right my command will look like (without the quotes"?
    "Bcdboot VHDE:\windows /s D:"

    including no space between "VHD" and "E"?

    thanks again.
    Bcdboot E:\windows /s D:

    E:\ = VHD File
    D:\ = USB Stick
      My ComputerSystem Spec

  2.    06 Jun 2016 #22

    Unfortunately it still won't boot as a VM.

    I ran the bcdboot command as per above, and it said it succeeded. And it created an EFI directory:
    Click image for larger version. 

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    But when I start the VM I still get the message:
    Click image for larger version. 

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    In the VM settings here is the boot drive info:
    Click image for larger version. 

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    Any thoughts on what I am doing wrong and how to fix it?
      My ComputerSystem Spec

  3.    07 Jun 2016 #23

    I suspect that per this article Preparing Virtual Hard Disks for Boot

    I need to do one more step - "Use the bcdedit /store <path> option to specify the BCD file inside the VHD as the BCD store,"

    Do you agree?

    Never mind, that didn't work either.
    Last edited by VMNewbie; 11 Jun 2016 at 15:50.
      My ComputerSystem Spec

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