If you need CAD software that is lightweight or free, consider these official options: AutoCAD Web
Released in 2008, AutoCAD 2009 (codenamed "Raptor") shifted away from the traditional toolbar-heavy interface toward a more task-oriented workspace. It was designed to bridge the gap between classic drafting and modern 3D visualization. AutoCAD 2009 Portable -g8ni 92-
: Official versions require specific serial numbers and product keys from the Autodesk Account for activation. Alternatives and Learning If you need CAD software that is lightweight
Using "portable" versions from unauthorized sources carries several critical risks: Is Autocad lt 2009 obsolete? - Forums, Autodesk AutoCAD 2009 Portable -g8ni 92-