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Date Version Primary developer Notable introduction IBM hardware August 1980: 86-DOS 0.10 Tim Paterson: First Seattle Computer release August 1981: PC DOS 1.0 Microsoft: First IBM release IBM Personal Computer: May 1982: PC DOS 1.1 Microsoft: Double-sided disks: Upgraded IBM Personal Computer: March 1983: PC DOS 2.0 Microsoft: Hard disk drive ...
This specific version of MS-DOS is the version that is discussed here, as all other versions of MS-DOS died out with their respective systems. One version of such a generic MS-DOS (Z-DOS) is mentioned here, but there were dozens more.
MS-DOS 2.12, a special OEM version for the TI Professional in 1983/1984; MS-DOS 2.25, Microsoft version with extended multilanguage support in 1985; It may also refer to versions of the IBM PC DOS family: PC DOS 2.0, successor of PC DOS 1.1 in 1983; PC DOS 2.1, successor of PC DOS 2.0 in 1983; PC DOS 2.11, successor of PC DOS 2.1 in 1984
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.
PC DOS 7 was released in April 1995 and was the last release of DOS before IBM software development (other than the development IBM ViaVoice) moved to Austin. The REXX programming language was added, as well as support for a new floppy disk format, XDF , which extended a standard 1.44 MB floppy disk to 1.86 MB.
RT-11 5.7 (Last stable release, October 1998) Solaris 7 (first 64-bit Solaris release – names from this point drop "2.", otherwise would've been Solaris 2.7) Windows 98; 1999 AROS (Boot for the first time in Stand Alone version) Inferno Second Edition (Last distribution (Release 2.3, c. July 1999) from Lucent's Inferno Business Unit) [47] Mac ...
This was addressed not long after with the release of DOS 3.0. When formatted with DOS 3.0, the disk held 40 tracks of 27 sectors, up from 18 on DOS 2.0. Each sector holds 128 bytes, for a total of 133,120 bytes of storage, up from DOS 2.0's 92,160. In DOS 2.0, a 10-bit number was used to store sector numbers in the directory.
On August 10, 1983, Paul Allen called Tim Paterson, original author of 86-DOS and MS-DOS 1.x, asking him to do a "Z80 version of MS-DOS" for the MSX standard. [5] At the time, Paterson was busy trying to get the first product of his startup Falcon Systems ready to go, so he suggested a few other developers, but Allen said he had already asked ...