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MS-DOS (/ ˌ ɛ m ˌ ɛ s ˈ d ɒ s / em-es-DOSS; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few operating systems attempting to be compatible with MS-DOS, are sometimes ...
MS-DOS 4.0 [a] was a multitasking release of MS-DOS developed by Microsoft based on MS-DOS 2.0. Lack of interest from OEMs , particularly IBM (who previously gave Microsoft multitasking code on IBM PC DOS included with TopView ), led to it being released only in a scaled-back form.
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.
MS-DOS 7 is a real mode operating system for IBM PC compatibles.Unlike earlier versions of MS-DOS, it was not released separately by Microsoft, [3] but included in the Windows 9x family of operating systems. [4]
DOS (/ d ɒ s /, / d ɔː s /) is a family of disk-based operating systems for IBM PC compatible computers. [1] The DOS family primarily consists of IBM PC DOS and a rebranded version, Microsoft's MS-DOS, both of which were introduced in 1981.
In a blog post that outlined the deal, Roy Levin, managing director of Microsoft Research, said the company granted the museum permission to make the code public for MS DOS 1.1 and 2.0 and ...
MS-DOS / PC DOS and some related disk operating systems use the files mentioned here. System Files: [1] IO.SYS (or IBMBIO.COM): This contains the system initialization code and builtin device drivers; MSDOS.SYS (or IBMDOS.COM): This contains the DOS kernel. Command-line interpreter (Shell): COMMAND.COM: This is the command interpreter.