DR DOS was Digital Research's MS-DOS clone that emerged in 1988 as a direct descendant of CP/M, the popular 1970s operating system. After losing the IBM PC deal to Microsoft, Digital Research created DR DOS as a compatible alternative that often outperformed MS-DOS with better features like enhanced error messages, command history, and superior memory management. The product went through several iterations and ownership changes (Novell, Caldera), ultimately leading to a $280 million settlement against Microsoft for anti-competitive practices. DR DOS represented both a clone of MS-DOS and ironically a successor to its own predecessor CP/M, demonstrating how competition drove DOS innovation throughout the late 1980s and 1990s.
Table of contents
The ill-fated deal with IBMBuilding DOS compatibility into CP/MEnter DR DOS 3.31 and 3.4: The 1988 Comeback SpecialDR DOS Version 5DR DOS Version 6The Novell buyoutCaldera Open DOS and DR-DOSCaldera Embedded Systems and LineoDevicelogicsLegacySort: