Convert Hyper-V vhd to vhdx and back with PowerShell
To convert an vhd disk file to vhdx superduper format with PowerShell you just use the cmdlet Convert-VHD (this work only on hyper-v enabled machines). I read Virtual PC Guys post about how to do it in the GUI and wanted to make a small post about how to do it in powershell
Convert-VHD -Path \\win2012-dc01\vms\old.vhd -DestinationPath \\win2012-dc01\vms\new.vhdx -DeleteSource -ComputerName win2012-hv01
And to go back
Convert-VHD -Path \\win2012-dc01\vms\new.vhdx -DestinationPath \\win2012-dc01\vms\old.vhd -DeleteSource -ComputerName win2012-hv01
And here is a screendump
And if I for example want to convert a number of vhd´s
first I create 5 dummy files, of course in the real life you have some files that already are there ready to be converted.
1..5|%{New-VHD -Path .\vhd$_.vhd -SizeBytes 2GB}
Get-VHD -Path C:\vhds\* | %{Convert-VHD -Path $_.Path -DestinationPath ($_.Path + "x") -DeleteSource}
olala look
If you want to convert back to vhd format you need to be sure that it is not bigger than 2040 GB or it will fail. Good luck!
Categories: Hyper-V, Powershell, Virtualization, Win2012
