Windows 10: How to convert Hyper-V VHDX file to VHD using PowerShell

If you have a VHDX file and you want to make it compatible with some other virtual machine that supports VHD format, then this post shows, how you can convert the Hyper-V VHDX file to VHD using Windows PowerShell so [...]

This post How to convert Hyper-V VHDX file to VHD using PowerShell is from TheWindowsClub.com.

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Mount or Unmount VHD or VHDX File in Windows 10


Hi, and thanks for your reply.

There is no problem with File Backups. It is the System Image Backup .vhdx file which I am trying to view, using it to mount a VHD (Drive M which appears empty to File Manager. As you suggested I had a good look at the W7 tutorial for file mounting, and explored some of its links, but to no avail.

I also tried to mount the VHD with Diskpart from elevated command prompt: Diskpart; select vdisk file=filename.vhdx; attach vdisk. There was no need to assign a drive letter as Windows remembered it, which is annoying. M: was again empty.

Then, Windows PowerShell: Mount-VHD -Path "[location of vhd]". This cmdlet failed with error message "Mount-VHD is not recognised as the name of a cmdlet ...". Googling this, I found this could be due to the absence of a Hyper-V module for Windows PowerShell. Now, I know that Hyper-V Virtualization does not come with W10 Home but does with W10 Pro. Could my problem be related? Could it be that the image file is vdhx rather than vdh which I assume was the format in W7? I am out of my depth here, and don't want to experiment without advice.

Out of interest I checked UEFI Bios and found Virtualisation Technology to be disabled, and Hyper-V missing from the Programs and Features list in Control Panel. With some trepidation I tried Enabling Virtualisation. Programs and Features list was unchanged, as was the PowerShell outcome and the zero content of M: after attaching via Disk Management. I returned Virtualisation to Disabled.

Drive M:'s properties show its partition type to be GUID, not MBR.

Grateful for any further thoughts. Thanks.

 

Risk with adding Hyper-V?

Or just use Convert-VHD –Path c:\test\MY-VM.vhdx –DestinationPath c:\test\MY-NEW-VM.vhd

Converting Hyper-V .vhdx to .vhd file formats for use in Windows Azure

 

Risk with adding Hyper-V?

You do not need to install Hyper-V to convert a vhd to a vhdx file if that is what you want to do.

Simply create a vhdx file of same or larger capacity as vhd file.

TThen mount both vhd and vhdx files as drive and clone vhd to vhdx using Macrium Reflect Free.