Always verify the SHA-256 hash of any downloaded ISO or VHD against known Microsoft values to ensure the image has not been tampered with.
For older builds or specific pre-made images, many users turn to community-maintained repositories. Use these with caution as they are not officially verified by Microsoft. windows 81 vhd download link
If you're looking for a more straightforward or long-term solution, consider: Always verify the SHA-256 hash of any downloaded
: Use the Convert-WindowsImage.ps1 script to turn a standard Windows 8.1 ISO into a bootable VHD or VHDX file. 5.14]. Full Hardware Access
: Run a separate OS for software testing without affecting your main PC [5.2, 5.14]. Full Hardware Access