Portables from torrent sites are notorious for containing:

You cannot download AutoCAD 2000 from Autodesk's official website. Your options here are limited:

Autodesk now offers a browser-based version of AutoCAD. You do not need to install anything; you simply log in via any modern web browser on a laptop, tablet, or desktop. It provides the authentic command line, core drafting tools, and direct access to DWG files stored in the cloud. 2. FreeCAD (Open-Source & Extensible)

: For users in developing regions or those repurposing older hardware, AutoCAD 2000 remains a highly efficient tool for 2D drafting, providing robust functionality where modern software would lag. Modern Compatibility Challenges

Autodesk does not officially distribute or support "Portable" versions. These are typically third-party modifications of the original software.

If the ultimate goal of a "portable" app is to run it on any computer without installing software, modern cloud platforms offer the perfect solution:

Allowed for real-time 3D viewing manipulation, which was revolutionary for its time.

Instead of a "portable" hack, consider:

A completely free, open-source 2D CAD application. It has an incredibly small file footprint, runs flawlessly on Windows, Mac, and Linux, and mimics classic command-line routing found in early AutoCAD versions.

Modern CAD tools are filled with cloud connectivity, parametric constraints, and heavy rendering engines. Many old-school drafters prefer the clean, distraction-free command line of the 2000 edition. The Technical Reality of "Portable" Software

While efficient, it is important to understand what AutoCAD 2000 cannot do:

Improved stability for long-term drafting tasks. What is a "Portable" Application?