MSDOS Introduction
Copyright B Brown, 1988-2000. All rights reserved.
MSDOS VERSIONS
| Version | Year | Features |
| v1.0 | 1981 | First operating system for IBM-PC |
| v1.25 | Double sided disk
support and bug fixes added, widely distributed by OEM's |
|
| v2.0 | 1983 | Hierarchical file structure and hard disk support |
| v2.01 | International support added | |
| v2.11 | 2.01 with bug fixes | |
| v3.0 | 1984 | Introduced with AT model.
Support for 1.2MB floppy, and larger hard disk sizes |
| v3.1 | 1984 | Support for Microsoft Networks added |
| v3.2 | 1986 | Enhanced support for new media types added |
| v3.3 | 1987 | Support for 1.44MB
floppy, support for 4 serial ports, hard disk partitions > 32MB, improved national language support |
| v4.0 | Dosshell, support for
TSR's, expanded memory drivers, install program (select), mem command |
|
| v4.01 | v4.0 with bug fixes | |
| v5.0 | 1992 | Support for upper memory
blocks, larger partition sizes (<2GB), loading DOS into HMA, loading device drivers in UMB, improved dosshell and on-line help, support for 2.88MB drives, QBasic, improved system editor (edit) |
| v6.0 | 1994 | |
| v6.22 | 1994 |