Because this is a portable version, "install" is a bit of a misnomer. You are essentially configuring a synced environment. Download and install the Google Drive for Desktop app.
Inside AutoCAD, go to and ensure the support file search paths point to the Google Drive directory. Optimizing Performance: autocad 2015 portable google drive install
However, setting this up requires a clear understanding of how portable software interacts with cloud storage and operating systems. Understanding Portable AutoCAD 2015 Because this is a portable version, "install" is
A portable application is a version of software designed to run without a traditional installation process. It does not write to the Windows Registry or store configuration files in the system's AppData folders. Instead, everything it needs to run—libraries, settings, and the executable—is contained within a single folder. Because this is a portable version