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Using PowerShell to Convert a VHD to a VHDX

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Yesterday I showed you how to convert a VHD file to a VHDX using the Hyper-V Manager user interface. Today I want to show you that it is even easier to do using PowerShell:

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All you need to do is run the following command:

Convert-VHD .\test.vhd .\test.vhdx

We will figure out whether you want the new file to be a VHD or VHDX depending on the file extension that you provide.  You can also specify whether you want a dynamic or fixed disk – but that is optional.

Cheers,
Ben

Comments

  • Anonymous
    October 03, 2012
    Excellent , just like VHDtool.exe but running from powershell.

  • Anonymous
    October 03, 2012
    Hi ben, is the 'FileSize' before & after conversion correct?

  • Anonymous
    October 03, 2012
    The comment has been removed

  • Anonymous
    October 04, 2012
    Mario - Yes, VHDX files tend to be a bit larger than VHD files - as we preallocate a buffer for performance reasons. Cheers, Ben

  • Anonymous
    October 12, 2012
    Hi Ben, what is the use of -passthru option in the convert-vhd command

  • Anonymous
    October 16, 2013
    The problem we are facing is that we convert a .VHD to .VHDX using powershell, the .VHDX file is unusable. If we convert the VHD to VHDX using the HyperV settings (GUI) the .VHDX does work. Is there any difference in the conversion process when using PowerShell and when using the GUI? Are there any parameters we forget to specify in PowerShell?

  • Anonymous
    March 11, 2014
    would it work for avhdx files as well? in fact, I want to know how would I convert a sequence of vhdx and avhdx files to vhd and avhd so that I keep that parent-child relationship between the converted files as well.

  • Anonymous
    September 27, 2015
    You don't mention that this is a script, or where to get it from. Quite pertinent info buddy. I've only just become aware of VHDx. I've not used Hyper-v - is it 'just' like VirtualBox / VMWARE ? OK, now the big q, these vhdx things, in fact ALSO these PowerShell cmdlets for VHD/VHDx mgmt... Is it specifically, and exclusively, concerning Hyper-V virtual-drives? I'm asking as I'm a native Win(7/10/Server) VHD user, and curious about the new VHDx format. Thanks!

  • Anonymous
    November 27, 2015
    The comment has been removed

  • Anonymous
    March 29, 2016
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