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For example, MS-DOS 4, released in July 1988, was followed by DR DOS 5.0 in May 1990. MS-DOS 5.0 came in April 1991, and DR DOS 6.0 was released the following June. [90] These products are collectively referred to as "DOS", even though "Disk Operating System" is a generic term used on other systems unrelated to the x86 and IBM PC.
A further ICL/MS MS-DOS 4.10.30 version was released on May 10, 1988. No further releases were made once the contracts had been fulfilled. In July 1988, IBM announced " IBM DOS 4.0 ", an unrelated product continuing from DOS 3.3 and 3.4 , leading to initial conjecture that Microsoft might release it under a different version number. [ 5 ]
86-DOS (a.k.a. QDOS, created 1980), an operating system developed by Seattle Computer Products for its 8086-based S-100 computer kit, heavily inspired by CP/M; Concurrent DOS (a.k.a. CDOS, Concurrent PC DOS and CPCDOS) (since 1983), a CP/M-86 and MS-DOS 2.11 compatible multiuser, multitasking DOS, based on Concurrent CP/M-86 developed by Digital Research
Originally MS-DOS was designed to be an operating system that could run on any computer with a 8086-family microprocessor.It competed with other operating systems written for such computers, such as CP/M-86 and UCSD Pascal.
PC DOS remained a rebranded version of MS-DOS until 1993. IBM and Microsoft parted ways—MS-DOS 6 was released in March, and PC DOS 6.1 (separately developed) followed in June. Most of the new features from MS-DOS 6.0 appeared in PC DOS 6.1 including the new boot menu support and the new commands CHOICE, DELTREE, and MOVE. QBasic was dropped ...
Windows 95 (and Windows 98 and ME, that followed it) took over as the default OS kernel, though the MS-DOS component remained for compatibility. With Windows 95 and 98, but not ME, the MS-DOS component could be run without starting Windows. [18] [19] [20] With DOS no longer required to use Windows, the majority of users stopped using it directly.
This is a list of Microsoft written and published operating systems. For the codenames that Microsoft gave their operating systems , see Microsoft codenames . For another list of versions of Microsoft Windows, see, List of Microsoft Windows versions .
Though MS-DOS 7.0 and Windows 4.0 could be readily segregated and marketed as different products, Microsoft stopped marketing Windows and MS-DOS separately with the release of Windows 95. [ 15 ] A major difference from earlier versions of MS-DOS is the usage of the MSDOS.SYS file. [ 16 ]