You unless you have:
Specify a location and a size (at least 40 GB is recommended) [5.1]. windows 81 vhd download link
However, consider the following:
Official Microsoft download links for a pre-configured Windows 8.1 Virtual Hard Disk (VHD) are , as Microsoft has retired the official downloads for Windows 8.1 ISOs and evaluation virtual machines. Because Windows 8.1 reached its end of support on January 10, 2023 , Microsoft no longer provides active download links or updates for this version. Current Status and Alternatives You unless you have: Specify a location and