The wizard generates a bootable ISO image that you can burn to a CD/DVD or write to a USB drive using tools like Rufus. Core Tools and Functions

Run the MSDaRT81.msi installer obtained from your licensing portal.

To use ERD Commander/DaRT 8.1, you do not simply download an ISO; you build it using the .

The tool for Windows 8.1 is officially known as the Microsoft Diagnostics and Recovery Toolset (DaRT) 8.1 . Originally developed by Winternals, it was acquired by Microsoft and integrated into the Microsoft Desktop Optimization Pack (MDOP) . For Windows 8.1 specifically, you must use DaRT 8.1 to ensure compatibility with the operating system's kernel. Official Download and Access

Because DaRT is a professional-grade recovery tool, it is not available as a standalone public download from Microsoft for home users. Instead, it is distributed through the following official channels:

Available to enterprise customers with Microsoft Software Assurance .