• A Look Back at MS-DOS 4.0. MS-DOS 4.0, released in 1988, introduced several new features and improvements over its predecessors.
  • MS-DOS 4.0x. ... The below versions, as released to the consumer market, are based on DOS 3.3x and IBM's PC-DOS 4.0 enhancements.
  • MS-DOS 4.00 and 4.01. Addeddate. 2022-04-27 18:54:21. Identifier. ms-dos-4.00-and-4.01. ... Microsoft MS-DOS 4.00 (10-6-1988) (5.25-360k).7z download.
  • MS-DOS 4.0 / MS-DOS 4.x. ... MS-DOS 4.x (IBM-developed) – includes a graphical/mouse interface. It had many bugs and compatibility issues.[66].
  • Microsoft has released the source code for MS-DOS 4.0 and it's giving me all the nostalgia feels. 4 hours ago.
  • MS-DOS 4.00 was released in October 1988. See the PC DOS 4.00 Feature Summary for more details. ... RT-11 4.0. Tapes.
  • MS-DOS 4.0[a] was a multitasking release of MS-DOS developed by Microsoft based on MS-DOS 2.0.
  • In a significant move for tech enthusiasts and historians alike, Microsoft has made the source code for MS-DOS 4.0 publicly available.
  • Not to be confused with the multitasking MS-DOS 4, a separate version released by Microsoft to a limited number of OEMs in 1986. ... 4.0. Preliminary name.