MS-DOS 4
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| Version of MS-DOS | |
 | |
| Version | 4.x |
|---|---|
| Preliminary name | MS-DOS 3.40 |
| Release date | 1988-07 |
| 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.SYSandAUTOEXEC.BATfiles. - The introduction of a new
MEMcommand, 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]