VhdxTool Release Notes
KB 200001

VhxdTool is a command line utility for Windows for quick creation and resizing of fixed-size virtual hard disk files (VHDX). VhdxTool offers a similar functionality as a former program vhdtool for Windows Server 2008/R2, but while vhdtool worked with older format (VHD), VhdxTool works with the new format (VHDX).

Attention! The performance benefit comes at the price of data security: unlike Windows standard tools such as diskpart or New-VHD, and like a former vhdtool for VHD-files, this tool does not zero-out the newly created or resized VHDX-file and therefore it might be possible for a user to access data that previously existed on the underlying physical hard disk by running data forensics tools inside the virtual machine the disk will be attached to. As such you should only use this tool when you fully understand all the implications.

Compatibility and usage information

Any use of this software is at your own risk. Systola accepts no liability for any loss or damage arising from the use of this software.

System requirements: Microsoft Windows, .NET Framework 4.5+

The tool has been tested with files up to about 10TB. If you are able to test the tool in the environments with tens of terabytes, we would appreciate your valuable feedback!
Version History

  • 19.08.2016: v16.08.19: Incorrect log size calculation fixed
  • 09.05.2016: v16.05.09: Unsupported SMB targets are now checked for
  • 04.05.2016: v16.05.04: Fixed the problem with upgrading legacy (VHD) files of certain sizes.
  • 08.09.2015: v15.09.08: File extension is now automatically added
  • 17.02.2015: v15.02.16: VHD-to-VHDX conversion
  • 01.02.2015: v15.02.01: Fixed 4TB problem
  • 01.02.2015: v15.02.01: Dynamic-to-Fixed Conversion
  • 09.01.2015: v15.01.09: Kleinere Korrekturen
  • 01.01.2015: v15.01.01: Initial Release

vhdxtool.exe create  [Optionen] – creates a new VHDX file.
vhdxtool.exe extend  [Optionen] – extends an existing VHDX file.
vhdxtool.exe convert [Optionen] – converts a dynamic VHDX to a static one.
vhdxtool.exe upgrade [Optionen] – converts a VHD to VHDX.
vhdxtool.exe display [Optionen] – displays information about a VHDX file.

If you have any questions about VdhxTool,
if you have problems with VhdxTool,
if you have found a bug,
if you have a feature request,
or if you just want to give us feedback:

drop us a few words, and we will get in touch with you.
  • Subject: VhdxTool
  • Publication date: 01.01.2015
  • Last updated: 19.08.2016
  • Current version: 16.05.09