Since official pre-built VHDs are scarce, the standard procedure is to convert a standard installation into a virtual format:

Using VHDs in Windows 8.1 offers several advantages:

: Install the OS using the ISO in a manager like Oracle VM VirtualBox or Microsoft Hyper-V . During setup, the software creates a .vhd or .vhdx file automatically.

Looking for a Windows 8.1 VHD (Virtual Hard Disk) can be tricky since Microsoft officially ended support for the OS on January 10, 2023. While pre-configured VHDs are no longer readily available on the Microsoft Evaluation Center , you can still create your own for use in VirtualBox, VMware, or Hyper-V.

Since Microsoft has restricted access to official evaluation VHDs, you may need to look for trusted archiving or developer sites: Internet Archive Search for "Windows 8.1 VHD". Microsoft Evaluation Center Occasionally offers ISOs that can be used to create VHDs.

Native boot allows a physical computer to boot into the operating system inside the VHD file without virtual machine overhead. This gives the Windows 8.1 environment full access to your physical graphics card, CPU, and RAM.

: Systems running Windows 8.1 no longer receive security updates, making them vulnerable to newer threats.

: Avoid websites offering a free "Windows 8.1 VHD download" without a license key. These are typically illegal and dangerous.

If you no longer need your Windows 8.1 VHD, here's how to cleanly remove it:

Once you have your Windows 8.1 ISO file, you have two primary paths to get it running on a VHD.