AOMEI Partition Assistant
Convert VMDK to VHDX: Migrate VMware to Hyper-V
Overcome deprecated Microsoft conversion tools during your hypervisor transition. Master the process of migrating VMware to Hyper-V environments and convert VMDK to VHDX securely using handy tool.
By Lucas / Updated on July 15, 2026
Quick Answer:
Converting virtual hard disk formats is a mandatory step when migrating from VMware to Microsoft Hyper-V. Review the direct solutions below to execute a secure V2V (Virtual-to-Virtual) migration without experiencing data loss.
Yes, you can successfully convert VMDK to VHDX formats to migrate your virtual machines. The approach you choose depends on your technical comfort level with command-line interfaces versus visual disk management tools.
- Native PowerShell Fix: Microsoft previously offered the Microsoft Virtual Machine Converter, but it has been deprecated. Administrators must now use complex PowerShell scripts or the free Microsoft Virtual Machine Converter command-line utility to rewrite the file headers natively.
- Third-Party Solution: Because native scripts frequently crash during large transfers, IT experts prefer using AOMEI Partition Assistant. By mounting both virtual disks to your host PC, you can use the Disk Clone feature to perform a 1:1 sector-level copy from the VMDK directly into a blank VHDX file, followed by the Create VM tool to deploy it instantly.
Why Convert VMDK to VHDX?
Understanding the proprietary storage formats used by top hypervisors ensures you choose the correct migration path. Let's explore why administrators frequently execute these cross-platform conversions.
Virtual machines rely on virtual hard disk files to store their operating systems, databases, and user files. VMware exclusively utilizes the Virtual Machine Disk format, while Microsoft Hyper-V strictly requires the Virtual Hard Disk v2 format. If an enterprise decides to stop paying for VMware licenses and migrate to the natively integrated Windows 11 Hyper-V environment, it cannot simply drag and drop its old servers. The new hypervisor will permanently reject the old file type.
Method 1: Convert VMware to Hyper-V via Native PowerShell
Executing format conversions without third-party software requires advanced command-line knowledge. Administrators can utilize Microsoft's virtualization modules to rewrite the disk files natively.
Before you begin to convert VMDK to VHDX using PowerShell, you must ensure that your host computer is running Windows 10 or Windows 11 Pro/Enterprise with the Hyper-V feature fully enabled. You must also temporarily remove any VMware Tools installed inside the guest OS before initiating the conversion, as these drivers will cause Blue Screen of Death crashes when booted in Hyper-V.
Step 1: Execute the PowerShell Conversion Script
1. Typing command-line scripts forces the host operating system to rebuild the virtual disk architecture.
2. Click the Windows Start button, type PowerShell, right-click it, and select Run as Administrator.
3. First, you must import the Hyper-V module by typing the following command and pressing Enter: Import-Module Hyper-V
4. Next, use the conversion command, replacing the file paths with your actual directories. Type the following and press Enter:
ConvertTo-MvmcVirtualHardDisk-SourceLiteralPath "C:\Users\user\Documents\temp\vm\pgdc.vmdk"-DestinationLiteralPath "C:\Users\Public\Documents\Hyper-V\Virtual hard disks\pgdc" -VhdType DynamicHardDisk -VhdFormat Vhd
The terminal will display a progress bar. Once completed, your new VHDX file will be generated in the destination folder, ready to be attached to a new Hyper-V virtual machine
Step 2: Attach the Converted VHDX to a New Hyper-V VM
Once the PowerShell script finishes, the disk is ready, but it has no virtual motherboard to boot from. You must manually construct a new hypervisor environment to house the converted disk.
1. Click the Windows Start button, type Hyper-V Manager, and open the application.
2. In the right-hand Actions panel, click New > Virtual Machine.
3. Follow the wizard to name your VM and allocate RAM. Ensure you choose Generation 1 or Generation 2 to perfectly match the original VMware boot mode (Legacy vs UEFI).
4. When you reach the Connect Virtual Hard Disk step, do not create a new disk. Select Use an existing virtual hard disk.
5. Click Browse and locate the .vhdx file you just generated via PowerShell.
6. Click Finish. Right-click your new VM, click Start, and your migrated server will successfully boot in Hyper-V.
Method 2: Execute V2V Migration Using AOMEI Partition Assistant
Bypassing unreliable command-line translation scripts guarantees a flawless server migration. AOMEI Partition Assistant provides the ultimate graphical interface for securely cloning virtual disks between proprietary formats.
To avoid native conversion scripts for mission-critical databases and reliably convert VMDK to VHDX, use AOMEI Partition Assistant. This elite computer management software allows you to mount virtual disks to your host PC as if they were physical drives, enabling a flawless 1:1 sector clone that ignores formatting boundaries entirely.
AOMEI Partition AssistantThe Best Windows Disk Partition Manager and PC Optimizer
Step 1: Mount the Virtual Disks to the Host
To manipulate virtual storage files externally, you must expose them to your host computer's operating system.
1. Open Windows Disk Management on your physical host PC.
2. In the top toolbar, click Action > Create VHD. Choose VHDX, set the size to match your old VMware disk, and save it to your desktop.
3. Click Action > Attach VHD, and select both your new blank VHDX file and your old VMDK file. Both virtual disks will now appear in Disk Management as physical drives.
Step 2: Use Disk Clone for Format Conversion
Copying the raw data sector-by-sector circumvents the translation errors inherent in PowerShell scripts.
1. Download, install, and launch AOMEI Partition Assistant Professional on your host PC. In the top toolbar, click Clone and select Clone Disk.
2. Select the mounted VMware .vmdk disk as your Source Disk and click Next.
3. Select the newly created, blank Hyper-V .vhdx disk as your Destination Disk and click Next.
4. Choose Sector-by-Sector Clone to guarantee a flawless replica of the bootloader and operating system files.
5. Click Confirm, then click Apply and Proceed on the main interface. The software will securely copy the data into the new format.
Step 3: Deploy the New VM Using "Create VM"
Once your data is successfully cloned into the VHDX format, you must spin up a new hypervisor environment to boot it.
AOMEI Partition Assistant eliminates the steep learning curve of Microsoft Hyper-V Manager. Simply click the completely free Create VM tool on the main toolbar. Name your new machine, use the visual sliders to allocate host CPU and RAM, and attach your newly cloned VHDX file. Click Create & Start, and your migrated virtual server will boot flawlessly.
Ending
Executing a cross-platform hypervisor migration requires careful planning and the deployment of elite disk management utilities. Here is a brief recap of the essential strategies to ensure your transition is seamless.
Successfully migrating your infrastructure from VMware to Microsoft Hyper-V hinges on your ability to convert VMDK to VHDX files securely. While native PowerShell scripts provide a built-in method for translations requiring manual attachment in Hyper-V, they are prone to failure during massive data transfers.
By attaching your virtual disks to the host PC and utilizing the powerful Disk Clone and Create VM features within AOMEI Partition Assistant, you bypass complex command-line hurdles. This ensures your virtual machines are cloned at the sector level, preserving bootloaders and enterprise data perfectly for a flawless V2V migration.
FAQs
Transitioning between hypervisors frequently generates complex administrative inquiries. Below are the most common questions regarding VMDK to VHDX migrations.
Q: Do I need to uninstall VMware Tools before converting the virtual disk?
A: Yes, absolutely. VMware Tools are proprietary drivers designed specifically for the VMware hypervisor hardware. If you convert the disk and attempt to boot it in Hyper-V with these drivers still active, the guest operating system will crash and display a Blue Screen of Death. Always uninstall them inside the guest OS before migrating.
Q: Can I use AOMEI Partition Assistant to convert the disk from MBR to GPT during the migration?
A: Yes. If your old VMware disk was formatted as MBR, but you want your new Hyper-V machine to utilize modern UEFI boot standards, you can use AOMEI. After completing the Disk Clone, simply right-click the new VHDX disk inside the AOMEI interface and select "Convert to GPT" before booting it.
Q: Will converting a dynamic VMDK disk create a dynamic VHDX disk?
A: When utilizing the native PowerShell conversion scripts, you can specifically set the -VhdType DynamicHardDisk flag to ensure it remains dynamic. If using the AOMEI Disk Clone method, the new VHDX will match the characteristics of the blank VHDX file you manually generated in Windows Disk Management.
Q: Can I convert a VHDX file back to a VMDK file?
A: Yes. The process works in reverse. You can use specialized V2V converter tools, or use the same AOMEI Disk Clone method by mounting a blank VMDK and cloning the VHDX data directly into it.
