MS-DOS 4

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MS-DOS 4
Version of MS-DOS
Placeholder.png
Version4.x
Preliminary nameMS-DOS 3.40
Release date1988-07
Replaces
MS-DOS 3
Replaced by
MS-DOS 5

MS-DOS 4 is a family of versions of MS-DOS, initially released in 1988.

Features[edit | edit source]

  • Support for EGA and VGA display adapters.
  • Support for FAT16 partitions larger than 32 MB.
  • Support for LIM / EMS standard (driver EMM386.SYS, access to additional memory on IBM PC AT-386 and higher), which allowed individual parts of MS-DOS to load into additional memory.
  • Full-fledged support of the Russian language.
  • Improving the Select installation program. The process of installation and configuration is greatly simplified. It automatically creates the appropriate CONFIG.SYS and AUTOEXEC.BAT files.
  • The introduction of a new MEM command, which allows you to analyze the current memory configuration.
  • Four countries are included in the list of supported countries.
  • Graphic printing.
  • Various new features in existing commands: TREE, DELETE, MODE, APPEND, FASTOPEN, NLSPUNC, ATTRIB, FDISK, REPLACE, BACKUP, GRAFTABL, SELECT, COUNTRY, GRAPHICS.
  • Improved system drivers, including: ANSI.SYS, DRIVER.SYS, DISPLAY.SYS, PRINTER.SYS.
  • MS-DOS shell.

History[edit | edit source]

Initially, the project was named "MS-DOS 3.40", and under this name was mentioned in the 1988-09 issue of Serbian computer magazine "Svet Kompjutera",[1] as well as in a contract between Microsoft and Zenith Data Systems from August 1987.[2]

MS-DOS 4.00 was released in July 1988, only to be replaced by MS-DOS 4.01 in November 1988 due to a major bug. MS-DOS 4.02 was also mentioned in PX05132, however, if existing, it is yet to be found.[3]

References[edit | edit source]