Recovering Data of a Microsoft Hyper-V Virtual Machine

Applications for creating virtual machines exist to create one or several virtual machines in one computer; these machines have their own independent operating systems and disks, the space for which is allocated on the computer’s main hard disk.

Recovering Data of a Microsoft Hyper-V Virtual Machine

There are many third-party virtualization programs, but the most popular with the users are VMware Workstation and Oracle VirtualBox. To enable virtualization of its own operating systems, Microsoft also developed a similar tool, Windows Virtual PC. However, Windows 10 features a new generation of virtualization software, Hyper-V Manager.

Hyper-V

Hyper-V Manager is a convenient tool, but the one disadvantage is that it can create virtual machines only with Windows operating systems.

Virtual machine support with Hyper-V is available in Windows 10 Pro and Enterprise. By default, it is disabled, and in order to use it you have to enable this tool and turn it on.

To do it:

  • Go to Control Panel / Programs and Features / Turn Windows features on or off

    Programs and Features
  • In the opening Windows Features window, find Hyper-V, check all of its boxes and click OK

    Windows Features
  • Restart the computer

  • To start Hyper-V, enter «Hyper-V» in Windows search field and choose «Hyper-V Manager»

    Hyper-V Manager

System Files Of Hyper-V Virtual Machine

Unlike other virtual machine managers, by default Hyper-V never saves all virtual machine files (system files and virtual disk file) into one folder. They are stored in various locations:

  • Hyper-V virtual disk file is saved to the folder:
    C:\Users\Public\Documents\Hyper-V\Virtual hard disks

    C:\Users\Public\Documents\Hyper-V\Virtual hard disks
  • Other virtual machine files including configuration files and snapshots, are saved to this folder:
    C:\ProgramData\Microsoft\Windows\Hyper-V

    C:\ProgramData\Microsoft\Windows\Hyper-V

These folders are set by default, but their location can be modified if necessary.

It should be noted, that the main files in charge of virtual machine configuration and data (that is, of the machine’s operability) are the following:

  • *.vhdx – the virtual machine disk file. It has the name given to the virtual machine when it was created. Its default location is:
    C:\Users\Public\Documents\Hyper-V\Virtual hard disks
  • *.vmcx – the file containing virtual machine configuration settings. Its default location is:
    C:\ProgramData\Microsoft\Windows\Hyper-V\Virtual Machines

If these files are recovered, then you can also recover a virtual machine to a normal condition, including all files from its disk.

How To Recover a Deleted Hyper-V Virtual Machine

The Export/Import Function of a Virtual Machine

For cases, when Hyper-V virtual machine is used to work with important data or it is valuable to the user for other reasons, Microsoft provided the opportunity to create a virtual machine backup. For this purpose, there are virtual machine export and import functions that use Hyper-V Manager.

To Export a Virtual Machine:

  • Right-click on a virtual machine and select Export in the menu, and then specify the path to export data

    Export
  • A folder with an exported virtual machine copy will look like this.

    C:\Users\Public\Documents\Hyper-V\Virtual hard disks

These Elements Are The Following:

  • Snapshots – the folder containing virtual machine snapshots (if such snapshots were created);

  • Virtual Hard Disks – the folder containing virtual machine disk files;

    Virtual Hard Disks
  • Virtual Machines – the folder containing virtual machine configuration files.

    Virtual Machines

To Import a Virtual Machine:

  • Choose «Import Virtual Machine» from the menu of Hyper-V Manager

    «Import Virtual Machine»
  • Import the virtual machine by following wizard instructionsа

    Import the virtual machine

Restoring a Virtual Machine With Hetman Partition Recovery

If a virtual machine was deleted or lost from the user’s computer or another media for some reason, and you need to recover it, you can do it by recovering virtual machine disk files and configuration files; after that, you should import them into Hyper-V by using the Import function for virtual machines.

To do it:

  • Run Hetman Partition Recovery and scan the disk where virtual machine files were stored

    Hetman Partition Recovery. Type of analysis
  • With the help of the program, go to the folders where virtual machine disk files and configuration files are stored and recover them

    Hetman Partition Recovery. Recovery
  • Import the virtual machine, which you have just recovered, with Hyper-V and start it.

How to Recover The Hard Disk Contents Of a Hyper-V Virtual Machine

As we have already said, all files stored in virtual machine disks are located in .vhdx files of the virtual disk. Hetman Partition Recovery, the program for hard disk data recovery, has the function of mounting virtual disks and recovering data from such disks.

Virtual Hard Disks

If for some reason your virtual machine is no longer working, and there are important files on its disks, this data can be recovered. To do it:

  1. Run Hetman Partition Recovery and mount the virtual machine disk (if there are several of them, you can mount them all).

    Hetman Partition Recovery. Open

    Note. To mount a virtual disk with the help of Hetman Partition Recovery, click on Mount Disk in the quick access menu of the program. As a result, the window of choosing a virtual disk will open. In the right lower corner, specify the file type as «All files (*.*)», go to the folder containing the virtual machine and choose the required .vhdx file.

  2. As you do that, the section «Mounted Disks» containing the list of mounted virtual disks will appear in the window, where all disks found by the application are shown. If you mount several disks, you will see the entire disk list there.

    Hetman Partition Recovery. «Mounted Disks»
  3. Scan the disk with the application by clicking on the disk in the disk manager

    Hetman Partition Recovery. Type of analysis
  4. After the analysis, the application will show the directory tree of the scanned disk. Find and recover the required files.

    Hetman Partition Recovery. Recovery

    If you looked through the directory tree and you still don’t see the files which you need to recover, or if such files are recovered but they open with errors, then go to the folder Content-Aware Analysis shown by Hetman Partition Recovery and find your files there.

    Hetman Partition Recovery. Content-Aware Analysis

How To Recover The Disk File Of a Hyper-V Virtual Machine From The Virtual Machine Itself

In a series of experiments, we have established that files deleted or lost inside the virtual machine cannot be recovered.

Hyper-V
Author: Maxim Cherniga

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