How to Natively Boot a Windows 11 Virtual Hard Disk (VHDX)

Windows 11 can boot from a virtual hard disk file and perform like a native install. Unlike virtual machines, a native-boot VHDX file doesn’t rely on hypervisors or a parent OS, making it faster, more flexible, and easier to back up or restore.

This article explains how to set up a Windows 11 native virtual hard disk boot, key points to consider before deployment, and the most frequently asked questions.

How to boot natively from a virtual hard disk

Native-boot VHDX is a lightweight and streamlined alternative to repartitioning or relying on a virtual machine (VM). This guide focuses on installing Windows 11 into a VHDX and natively booting via BCDEDIT.

📌 Prerequisites:

• Windows 11 Pro, Enterprise, or Education
• UEFI support
• Secure Boot support
• 64GB (minimum) for VHDX hosting
• A VHDX created with a GPT partitioning scheme
• Administrative rights
• Third-party imaging tools (e.g., BCDEDIT, DISM)

📌 Recommended deployment strategies:

Method 1: Create a blank VHDX and apply a Windows image

IT professionals can automate this process using PowerShell or scripts.

📌 Use Cases: Clean, standardized setup for enterprise use

1. Create the VHDX file.
   1. Press Win + R, type PowerShell, and press Enter.
   2. Check if you have “New-VHD”. This cmdlet creates storage for virtual environments.
      1. To check, run this command:
         Get-Command New-VHD
      2. If your system can’t locate it, run the following code to install the Hyper-V module:
         Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All -All
   3. Run the following script:
      New-VHD -Path "<path>" -SizeBytes 64GB -Dynamic
      Then,
      Mount-VHD -Path "<path>" -PassThru | Initialize-Disk -PartitionStyle GPT
      Replace <path>with your VHDX file’s complete directory (e.g., D:\VHD\MyVM.vhdx).
   4. Create a new NTFS volume on the mounted VHDX, You can use Disk Management, for instance
   5. Assign a drive letter (e.g., V:).
2. Apply a Windows 11 image to the VHDX file.
   1. Use Windows 11 installation media to mount an image in your desired file path (e.g., C:\sources\install.wim).
   2. Use a Windows 11 ISO mounted as:
      <drive letter>:
dism /Apply-Image /ImageFile:<path>/Index:<number>/ApplyDir:V:\
      1. Replace <drive letter> with your drive letter, which contains your Windows 11 image file (e.g., C).
      2. Replace <path> with the complete directory of your Windows 11 image file.
      3. Replace <number>with the index number corresponding to your preferred Windows edition. To find this, do the following:
         1. Run the following command in an elevated Command Prompt/PowerShell to list all available Windows editions in your .wim file:
            dism /Get-WimInfo “<path>”
            Replace <path> with the complete file path of your Windows image (e.g., D:\sources\install.wim).
         2. Note the index number that corresponds to your desired Windows 11 edition (e.g., “2” for Windows 11 Pro).
         3. Use that number for the command in Step 2b.
3. Add VHDX to your Boot Menu.
   1. Run the following to make it bootable:
      bcdboot V:\Windows
   2. Use BCDEDIT to explicitly add the entry. Do this as needed:
      bcdedit /set {current} description "Windows 11 VHDX Boot"
bcdedit /set {current} device vhd=[D:]\VHDs\Win11.vhdx
bcdedit /set {current} osdevice vhd=[D:]\VHDs\Win11.vhdx
bcdedit /set {current} detecthal on
      1. Replace D: and the file path based on your VHDX file’s actual location.

Method 2: Install Windows 11 directly to VHDX during setup

📌 Use Cases: Testing insider builds, custom image deployments, portable work environments, and more.

1. Boot Windows 11 using a USB installer.
2. Press Win + R, type cmd, and press Ctrl + Shift + Enter.
3. Use DiskPart to create and attach the VHDX:
   1. Type diskpart and press Enter to open the DiskPart tool.
   2. Enter these commands one at a time:
      create vdisk file=D:\VHDs\Win11.vhdx maximum=65536 type=expandable
select vdisk file=D:\VHDs\Win11.vhdx
attach vdisk
convert gpt
create partition primary
format fs=ntfs quick
assign
Exit
4. Continue Windows Setup and select the mounted VHDX as the install drive.
5. To confirm the correct Boot Entry, run the following command:
   Bcdedit
   1. If you see an entry referencing your VHDX’s file location (e.g., vhd=[D:]\VHDs\Win11.vhdx), you successfully performed a native-boot VHDX.

💡 Tip: When you install Windows 11 on a VHDX, the installer usually attaches the boot entry for you automatically. But if the VHDX is on a different disk or if you’re setting up multiple boot entries, you’ll need to manually add it yourself.

To achieve this, do the following:

1. Run this command on an elevated command prompt:
2. bcdboot <drive letter>:\Windows, where <drive letter> is where your VHDX was mounted.
3. Run the following to add the entry manually:
4. bcdedit /set {current} description "Windows 11 VHDX Boot"
5. bcdedit /set {current} device vhd=[<drive letter>:]\VHDs\Win11.vhdx
6. bcdedit /set {current} osdevice vhd=[<drive letter>:]\VHDs\Win11.vhdx
7. bcdedit /set {current} detecthal on
   Replace <drive letter> with the drive where your VHDX was mounted.
8. To check if you’re natively booting from the VHDX, run bcdedit and look for an entry with your VHDX’s file path to confirm.

⚠️ Things to look out for when setting up a native-boot VHDX

Additional considerations when configuring a native-boot VHDX

Being aware of how a VHDX PC behaves is vital to upholding stability policies in test environments. Here’s everything you need to consider before rolling out any changes.

BitLocker isn’t supported on native-boot VHDX PCs

Native-boot VHDX doesn’t support BitLocker encryption. This is because BitLocker works closely with your physical disk components, ultimately preventing virtual hard disks from utilizing Microsoft’s drive protection tool.

Dynamic vs. fixed

When configuring your virtual disk, you can either opt for a “Fixed” VHDX that prioritizes performance (recommended for production environments) or a “Dynamic” VHDX, which sacrifices I/O speed for more efficient disk space use.

Performance

Files on native-boot VHDX PCs can reach higher speeds on modern SSDs. However, performance suffers on external USB drives and slow HDDs due to latency issues and lower transfer rates.

Drive letters

When you boot a workstation from VHDX, drive letters are assigned independently of the host computer’s operating system. This means that the C: drive on your VHDX will be different from your host’s C: drive and vice versa. Read Microsoft’s guide on restoring boot drive letters here.

Storage location

It’s worth repeating that SSDs are the best place to store your VHDX for optimal responsiveness and efficient memory-heavy operations. If your host computer runs on older tech, you may encounter lower performance levels.

Upgrades

Similar to sandboxes, a Windows OS running on a virtual hard disk may receive security patches, feature updates, and more via Windows Update.

Use native-boot VHDX for efficient and reliable test environments

Booting Windows 11 on a virtual hard disk is a lightweight solution for IT environments that require an isolated Windows instance for internal testing, training simulations, and more. Keep backups of your VHDX file just in case, and mind the proper steps to keep workflows seamless.

Related topics:

• How to Install Windows 10 on a VHD
• How to Import Hyper-V Virtual Machines
• How to Enable CPU Virtualization in Your Computer BIOS