"Portable" software is modified to run without writing entries into the Windows Registry or copying files to system folders (like Program Files or AppData ). Theoretically, you can place it on a USB stick and run it on any compatible computer. For a complex program like AutoCAD—which relies on hundreds of DLL files, .NET frameworks, and Visual C++ runtimes—creating a genuinely portable version is extremely difficult.
BricsCAD is a professional, highly compatible alternative. The trial lasts 30 days. It is not cracked, but it is safe and actually better optimized than AutoCAD 2010. autocad 2010 portable 64 bits ingles patched