Virtual machines can be useful in many scenarios and can greatly increase the efficiency and flexibility of your computer. Disk2vhd is a tool that can help with this process. This article will walk you through the free utility Disk2vhd and how to use it.

What is Disk2vhd?

VHD (Virtual Hard Disk) and its successor format, VHDx, are file formats used to represent virtual hard disk drives (HDDs). They are commonly employed as hard disks for virtual machines and are natively supported in modern versions of Windows. They serve as the native file format for Microsoft's hypervisor, the Hyper-V virtual machine system. - from Wikipedia

This is where VHD comes in. Disk2vhd is a free utility that converts a physical machine to a virtual one, and it allows you to do this while the operating system is running. Disk2vhd is easy to use because it takes advantage of Windows' Volume Shadow Copy Service to create volume snapshots. You also have the option to include system volumes and data volumes in your VHD.

What is Disk2vhd used for? Disk2vhd is a utility that converts physical hard disks or partitions into Virtual Hard Disk (VHD) files. VHD is a virtual disk format utilized in virtualization platforms such as Hyper-V, Virtual PC, and VMware. Here are some common uses of Disk2vhd: 1. **Virtualization migration**: If you want to run an existing physical server or desktop in a virtual environment, Disk2vhd can convert its hard drive to a VHD file, which can then be imported into a virtual machine software. 2. **Backup and disaster recovery**: Creating a VHD backup of system disks allows you to quickly restore the entire system in case of failure. This is more convenient than traditional file backups, as you can directly mount the VHD and boot the system. 3. **Testing and development**: Developers and IT professionals can use Disk2vhd to create copies of existing systems for testing and debugging purposes in isolated virtual environments without affecting production systems. 4. **Hardware upgrades**: If you plan to replace a physical hard drive and want an exact copy of the old system, Disk2vhd can create a VHD, which can then be restored on the new drive. 5. **Troubleshooting**: When facing difficult issues, you can convert the problematic computer's hard drive to a VHD and analyze it in a virtual environment, making it easier to diagnose the problem. Please note that Disk2vhd is a free tool provided by Microsoft and is compatible with Windows operating systems.

Disk2vhd is a convenient utility that creates VHD versions for use with Microsoft Virtual PC or Microsoft Hyper-V virtual machines. What sets Disk2vhd apart from other physical-to-virtual tools is that it can run on a live system. If you're looking to convert a disk, Disk2vhd is the better choice. A VHD created with Disk2vhd can:

    Content stored on hard drives. Use of different operating systems. Creation of disk sectors, files, and folders. Encryption of files for data protection. Backup and restoration of files and programs. Management of multiple virtual machines through a central console.

Moreover, running multiple tasks and experiments in parallel on a single machine reduces hardware costs and the headache of operational errors.

### Disk2vhd Pros and Cons

Using Disk2vhd to create a virtual hard drive can bring many conveniences to your computer work. When choosing a tool, there are some pros and cons to consider with this utility:

Advantages:

    It's a free and easy-to-use tool. It can perform P2V migration and simplify the P2V process. It supports Windows 11, 10, 8, 7, Windows Vista, and Windows Server 2008.

Disadvantages:

    1. Storage Limitation: It can only use VHD files smaller than 127GB. 2. Feature Limitation: Lacks automation features. 3. Speed Limitation: The conversion speed is relatively slow.

Having said that, you need to be aware of Disk2vhd's limitations when using it to convert a physical machine to a virtual one. For instance, the tool only allows you to convert one physical disk at a time, which makes it inadequate when you have multiple disks to convert.

How do I run Disk2vhd?

Before you begin this process, ensure that you have enough disk space available for the virtual disk. You have two options to create the virtual disk. Here are the detailed steps to run Disk2vhd:

Method 1: Convert a Physical Disk to a Virtual Disk

Step 1: Download and install Disk2vhd, then right-click the version that's most suitable for your device and select “Run as administrator.”

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Step 2: On the Disk2vhd License Agreement page, click Agree.

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Step 3: Choose “Use Vhdx” and “Use Shadow Copy,” and then pick a target location for the VHDX that will be created.

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Tip:
Be sure to select “Use Shadow Copy.” This is an important step in the process of converting a physical disk to a virtual disk. If you don't, you will only be able to retrieve files from the active volume, not from a shadow copy.

Click “Create” to convert the disk to VHDX format. Wait for the process to complete.

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Step 5: After the VHD has successfully exported to disk, click Close to finish.

Step 6: Locate the VHD file that you saved and use it to create a new virtual machine.

Method 2: Using Disk2vhd from the Command Line

In addition to the wizard, Disk2vhd can be scripted through command-line options. If you're more comfortable at a command prompt, you can use an asterisk (*) to include all volumes, or specify volumes by drive letter (such as c:):

Usage: disk2vhd <[Drive:[:Drive:]]...|[*]>
Example: disk2vhd * c:\vhd\snapshot.vhd

This command line enables you to automate Disk2Vhd or run it remotely, which can be more efficient than using the UI.

Conclusions

This article will introduce the benefits of using Disk2vhd and how to run the tool to convert a physical machine to a virtual one. Disk2vhd simplifies the process of virtualization. Converting a physical machine to a virtual machine can improve productivity and facilitate better data management.