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DR-DOS
 | |
 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[nb 1] is a disk operating system for IBM PC compatibles, originally developed by Gary A. Kildall's Digital Research, Inc. and derived from Concurrent PC DOS 6.0, which was an advanced successor of CP/M-86. Upon its introduction in 1988, it was the first DOS that attempted to be compatible with IBM PC DOS and MS-DOS.
Its first release was version 3.31, named so that it would match MS-DOS's then-current version.[2] DR DOS 5.0 was released in 1990 as the first to be sold in retail; it was critically acclaimed[3] and led to DR DOS becoming the main rival to Microsoft's MS-DOS,[4] who quickly responded with its own MS-DOS 5.0 but releasing over a year later.[5] It introduced a graphical user interface layer called ViewMAX. DR DOS 6.0 was released in 1991; then with Novell's acquisition of Digital Research, the following version was named Novell DOS 7.0 in 1994. After another sale, to Caldera, updated versions were released partly open-source under the Caldera moniker, and briefly as OpenDOS. The last version for desktops, Caldera DR-DOS 7.03, was released in 1999,[6] after which the software was sold to embedded systems by Caldera and then by DeviceLogics.
- ^ Cite error: The named reference
aboutwas invoked but never defined (see the help page). - ^ "DR DOS 3.x". WinWorld. Retrieved 2024-12-04.
- ^ "Antitrust Division | Competitive Processes, Anticompetitive Practices And Consumer Harm In The Software Industry: An Analysis Of The Inadequacies Of The Microsoft-Department Of Justice Proposed Final Judgment". www.justice.gov. 2015-08-14. Retrieved 2024-12-04.
- ^ Fisher, Lawrence M. (1992-03-29). "Preaching Love Thy Competitor". The New York Times.
- ^ Fisher, Lawrence M. (1991-03-13). "Microsoft in Inquiry by F.T.C." The New York Times.
- ^ "Caldera DR-DOS Notes - zxnet". www.zx.net.nz. Retrieved 2024-12-04.
Cite error: There are <ref group=nb> tags on this page, but the references will not show without a {{reflist|group=nb}} template (see the help page).
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