Windows 10: Repair HyperV Machine Boot (VHDX)

Discus and support Repair HyperV Machine Boot (VHDX) in Windows 10 Virtualization to solve the problem; Hi everyone. I have a big problem and I'm going crazy. Let's see if someone can help me. I have a virtualized windows 10 Enterprise LTSC 2019 in its... Discussion in 'Windows 10 Virtualization' started by Davichin, May 28, 2020.

  1. Davichin Win User

    Repair HyperV Machine Boot (VHDX)


    Hi everyone.
    I have a big problem and I'm going crazy. Let's see if someone can help me. I have a virtualized windows 10 Enterprise LTSC 2019 in its HyperV vhdx file, but I have inadvertently deleted the boot partition and now the HyperV does not start the machine.
    I do not know how to repair this problem because the boot partition no longer exists ...
    I have tried the recovery with the installation DVD but it does not find windows installations so it does not repair the startup (I suppose because it cannot find the partition of recovery)
    I have also tried several typical repair programs that have not worked for me. Someone can think of how I could get that partition back and boot up again?
    Thank you.

    :)
     
    Davichin, May 28, 2020
    #1
  2. Davichin Win User

    Repair HyperV Machine Boot (VHDX)

    Unfortunately that solution does not work for me since it would have the same problem. My problem is that on the vhdx disk I have removed the boot partition.

    Repair HyperV Machine Boot (VHDX) [​IMG]

    This is how the hard drive is.
    What I'm missing is the boot partition.

    Repair HyperV Machine Boot (VHDX) [​IMG]

    I do not know how to do a VHDX in HyperV to fix windows startup.
    Thank you very much for trying to help me. Repair HyperV Machine Boot (VHDX) :)
     
    Davichin, May 29, 2020
    #2
  3. NavyLCDR Win User
    Repair HyperV Machine Boot (VHDX)

    But then you have two full installs of Windows in the same VM and all you are using the second install of Windows for is a boot menu entry to boot the first install.

    It would take less than 5 minutes just to recreate a System partition on the existing vhdx drive.
     
    NavyLCDR, May 29, 2020
    #3
  4. Repair HyperV Machine Boot (VHDX)

    Repair HyperV Machine Boot (VHDX)

    Oh my Gods, there is a full set of Gurus here... *Eek*Eek*Eek

    Same as using Macrium to transfer EFI partition as I already suggested but it is not sufficient; modifying of BCD store/boot menu for targetting original windows partition is still required.

    Custom partitioning made during installation; otherwise active System Reserved partition (analogous to EFI partition, includes BCD store + loader) is always created.

    Repair HyperV Machine Boot (VHDX) [​IMG]
     
    muchomurka, May 29, 2020
    #4
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Repair HyperV Machine Boot (VHDX)

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