If you are a student or professional looking for a legitimate way to use the software, you can explore the CATIA V5 Student Edition or official cloud-based options through Dassault Systèmes system requirements
If you genuinely need a portable 3D CAD software for a USB stick (for emergency editing or viewing), Catia is the wrong tool. Use these instead: catia portable 2021
You cannot boot a Mac M1/M2/M3 or a locked-down corporate Dell that blocks USB boot. If you are a student or professional looking
Below is an overview formatted as a technical briefing regarding the feasibility and implications of using a "portable" CATIA 2021 build for production work. 1. The Nature of "Portable" CATIA which version to choose
Dassault Systèmes has transitioned away from traditional standalone portable files toward a cloud-based model via the . CATIA V5 or V6? which version to choose? - Ohmycad