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 DeviceLogics DR-DOS 8.0 | |
| Developer | |
|---|---|
| OS family | DOS |
| Working state | Discontinued |
| Source model | Mixed; primarily closed-source, some versions open-source |
| Initial release | 28 May 1988 |
| Final release | 7.01.08 / 21 July 2011 |
| Available in | English, older versions also in German, French, Italian, Spanish, Japanese |
| Platforms | x86 |
| Kernel type | Monolithic kernel |
| Default user interface | Command-line interface (COMMAND.COM) |
| License | Proprietary |
| Official website | drdos |
DR-DOS (written as DR DOS, without a hyphen, in versions up to and including 6.0) is a disk operating system for IBM PC compatibles. Upon its introduction in 1988, it was the first DOS that attempted to be compatible with IBM PC DOS and MS-DOS (which were the same product sold under different names).
DR-DOS was developed by Gary A. Kildall's Digital Research and derived from Concurrent PC DOS 6.0, which was an advanced successor of CP/M-86. As ownership changed, various later versions were produced with names including Novell DOS and Caldera OpenDOS.