How to start a VHDX Server in Hyper V, both windows server 2019 STD

Question

I have converted a Server 2019 std to a VHDX via disk2vhd from Microsoft, and trying to start on a server with Hyper V the same versión of Windows Server 2019 Std, shows the error 1.- The boot loader din not load an operating system and 2.- Network Adapter boot image was not found.

Answer 1

1: Verify Boot Order in Hyper-V

1. Open Hyper-V Manager.
2. Select the Virtual Machine: Right-click on your virtual machine and select "Settings".
3. Navigate to Firmware: Under "Settings", go to the "Firmware" section.
4. Check Boot Order: Ensure that the boot order is set to boot from the virtual hard disk (VHDX) first, and not from the network adapter.

2: Verify the VHDX Configuration

1. Check the VHDX Attachment:
   • Go to the "SCSI Controller" or "IDE Controller" section in the VM settings.
   • Ensure the VHDX file is attached as a boot drive, typically as IDE 0 if it's an IDE controller or as SCSI 0 if it's a SCSI controller.
2. Ensure the Disk is Set as the Boot Disk:
   • Ensure that the virtual hard disk is set to the highest priority in the boot order.

3: Fix Boot Configuration Using Windows Recovery Environment (WinRE)

1. Attach Windows Server 2019 ISO:
   • Download and attach a Windows Server 2019 ISO to the virtual machine.
2. Boot from the ISO:
   • Restart the VM and boot from the attached ISO. You might need to change the boot order temporarily to boot from the DVD drive.
3. Access Repair Tools:
   • In the Windows Setup screen, click "Next", then "Repair your computer".
4. Select Troubleshoot:
   • Choose "Troubleshoot", then "Advanced options", and then "Command Prompt".
5. Repair the Boot Configuration:
   • In the Command Prompt, use the following commands to repair the boot configuration:

bootrec /fixmbr

bootrec /fixboot

bootrec /scanos

bootrec /rebuildbcd

4: General Troubleshooting

Ensure VHDX is Bootable:

• Verify that the VHDX contains a bootable partition. You can attach the VHDX to another VM and check if the partitions are marked as active.

Check Disk2VHD Conversion:

• Ensure that the conversion process with Disk2VHD included all necessary partitions, including the system reserved partition.

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hth

Marcin