DR DOS 5.00
DR DOS 5.00 (codenamed Leopard) is a version of DR-DOS, initially released in June 1990. DR DOS 4.00 was skipped to avoid being associated with MS-DOS 4, which was unpopular at that time. This version introduces ViewMAX, which is a GUI file management shell based on GEM. DR DOS 5.00 is also the first version to include load-high capabilities.