Configuration settings, preferences, and temporary files are stored within the application's specific folder on the portable drive.
If the goal of "portable MATLAB" is to have a free, lightweight, and easily transportable tool, is a highly compatible alternative. matlab portable windows 7 64 bit
: Running "portable" versions (unofficial repacks) on Windows 7 often leads to missing DLL errors (like api-ms-win-crt-runtime-l1-1-0.dll and easily transportable tool