Location: location for the new VHD file. So for this example, Disk 0 uses MBR, while Disk 1 uses GPT. The asterisk in the Gpt column denotes that GPT is used. 
Open Disk Management (in Computer Management). If anyone has good, reliable information on troubleshooting or modifying the boot process (GPT, Secure Boot, etc.) please contact our team at and I’ll update with a list of resources. This article does not go into troubleshooting the boot process after the transfer is made. This process WILL copy the contents of a VHDX file to a VHD file, but it does not ensure that it will boot properly. Newer versions of Hyper-V have the ability to use Secure Boot, which may have gotten in my way. I was successful in moving a virtual machine that used MBR, but unsuccessful with another that used GPT. Note: The booting process for operating systems can be a complicated thing. It worked out really well and did allow the VM to boot. So I mounted the VHDX file as read-only, created and connected a new dynamic VHD file and used dd to copy the CONTENTS from one container to the other. Past the container abstraction, the data presented within either should be identical. In recent versions of Windows, you can create and mount both VHD and VHDX files. 
So after all that investigation, I came up with a rather simple way of accomplishing the task. Disk2vhd only supports using physical source disks. VHDXtool only supports upgrading from VHD to VHDX, and not the other way around.
VHDtool only supports VHD files, not VHDX. There’s the Convert-VHD command in the Hyper-V management suite, but you have to have Hyper-V installed in order to use it. Did some looking around and found various tools that didn’t quite fit. XenServer doesn’t support VHDX at this point in time, so I needed to get it into a format that XenServer DID support namely VHD. For this activity, I thought I’d try pulling the Hyper-V appliance into XenServer.Īfter extracting the appliance archive, I found that the virtual disk format was VHDX. Unfortunately, the vendor only supported VMware vSphere and Microsoft Hyper-V, and I’m running Citrix XenServer. I recently had a need to use a vendor’s virtual appliance in my lab.
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