MS-DOS 3.20

Originally 86-DOS, written by Tim Paterson of Seattle Computer Products, DOS was a rough clone of CP/M for 8086 based hardware. Microsoft purchased it and licensed it to IBM for use with Microsoft's IBM PC language products. In 1982, Microsoft began licensing DOS to other OEMs that ported it to their custom x86 hardware and IBM PC clones.

For IBM-specific releases, please see the IBM PC-DOS product page.



Release notes

Microsoft DOS 3.2 is the first release offered as a "vanilla" boxed set directly to consumers, instead of just OEMs.

This version adds mainstrem support for 720K 3.5" floppy drives, although some 2.x OEM versions also supported 720K disks.

A new RAMDRIVE.SYS supports creating a ram disk in conventional, EMS, or XMS memory.

Product type
OS
Vendor
Microsoft
Release date
1986
Minimum CPU
8088
User interface
Text
Platform
DOS
Download count
833 (14 for release)

Downloads

Download name Version Language Architecture File size Downloads
Microsoft MS-DOS 3.20 (1986) (5.25-360k) 3.20 English 12.98MB 7
Microsoft MS-DOS 3.20 (1986) [Seiko Epson OEM] (5.25-360k) 3.20 (1986) [Seiko Epson OEM] English 511.61KB 1
Microsoft MS-DOS 3.20 (1987) [Compaq OEM] (5.25-360k) 3.20 [Compaq OEM] English 240.08KB 0
Microsoft MS-DOS 3.20 (1987) [Seiko Epson OEM] (5.25-360k) 3.20 (1987) [Seiko Epson OEM] English 342.74KB 2
Microsoft MS-DOS 3.20 (6-2-1987) [HP OEM] (5.25-360k) 3.20 [HP OEM] English 234.66KB 0
Microsoft MS-DOS 3.20 (8-14-1987) [HP OEM] (5.25-360k) 3.20 (8-14-1987) [HP OEM] English 271.28KB 0
Microsoft MS-DOS 3.20 [AST Research OEM] (1987) (5.25-360k) 3.20 [AST Research OEM] English 4.34MB 0
Microsoft MS-DOS 3.20 [ATT OEM r2.02] (5.25-360k) 3.20 [ATT OEM r2.02] English 435KB 0
Microsoft MS-DOS 3.20 [Acer OEM] (5.25-360kb) 3.20 [Acer OEM] English 598.6KB 0
Microsoft MS-DOS 3.20 [Amstrad OEM] (5.25-360k) 3.20 [Amstrad OEM] (5.25-360k) English 139.6KB 0
Microsoft MS-DOS 3.20 [Amstrad OEM] [PC-1512] (with GEM Desktop 2.0U) (5.25-360k) 3.20 [Amstrad OEM] [PC-1512] English 524.94KB 0
Microsoft MS-DOS 3.20 [Amstrad OEM] [PC-1512] (with GEM Desktop 2.0U) [French] (5.25-360k) 3.20 [Amstrad OEM] [PC-1512] French 524.66KB 0
Microsoft MS-DOS 3.20 [Amstrad OEM] [PC-1512] (with GEM Desktop 2.0U) [German] (5.25-360k) 3.20 [Amstrad OEM] [PC-1512] German 526.35KB 1
Microsoft MS-DOS 3.20 [Amstrad OEM] [PC-1512] (with GEM Desktop 2.0U) [Spanish] (5.25-360k) 3.20 [Amstrad OEM] [PC-1512] Spanish 639.79KB 0
Microsoft MS-DOS 3.20 [BULL Micral OEM] [French] (3.5-720k) 3.20 [BULL Micral OEM] French 241.79KB 0
Microsoft MS-DOS 3.20 [Commodore PC 40 OEM] (5.25-360k) 3.20 [Commodore PC 40 OEM] English 248.14KB 0
Microsoft MS-DOS 3.20 [Commodore PC 40 OEM] [Spanish] (5.25-360k) 3.20 [Commodore PC 40 OEM] Spanish 258.89KB 0
Microsoft MS-DOS 3.20 [Data General OEM r2.00] (3.5-720k) 3.20 [Data General OEM r2.00] English 207.3KB 0
Microsoft MS-DOS 3.20 [Data General OEM r4.00] (3.5-720k) 3.20 [Data General OEM r4.00] English 308.28KB 0
Microsoft MS-DOS 3.20 [Epson APEX OEM] (5.25-360K) 3.20 [Epson APEX OEM] English 252.07KB 0
Microsoft MS-DOS 3.20 [ITT XTRA OEM Rev B] (3.5-720k) 3.20 [ITT XTRA OEM Rev B] English 4.77MB 0
Microsoft MS-DOS 3.20 [NEC Powermate Portable APC IV] (3.5-720k) 3.2 [NEC Powermate Portable APC IV] English 2.92MB 0
Microsoft MS-DOS 3.20 [Olivetti OEM] (5.25-360k) 3.20 [Olivetti OEM] English 229.17KB 0
Microsoft MS-DOS 3.20 [Olivetti Prodest PC1] [Italian] (3.5-720k) 3.20 [Olivetti Prodest PC1] Italian 1.67MB 0
Microsoft MS-DOS 3.20 [Phoenix Technologies OEM] (5.25-360k) 3.20 [Phoenix Technologies OEM] English 157.51KB 0
Microsoft MS-DOS 3.20 [Sharp PC-4500 OEM r1.0b] (3.5-720k) 3.20 [Sharp PC-4500 OEM r1.0b] English 223.71KB 0
Microsoft MS-DOS 3.20 [Siemens OEM] [German] (3.5-720k) 3.20 [Siemens OEM] German 569.94KB 0
Microsoft MS-DOS 3.20 [TI Business Pro OEM] (5.25-360k) 3.20 [TI Business Pro OEM] English 183.02KB 3
Microsoft MS-DOS 3.20 [Tandy 1000 OEM (03.20.00)] (5.25-360k) 3.20 [Tandy 1000 OEM (03.20.00)] English 54.52KB 0
Microsoft MS-DOS 3.20 [Tandy 1000 OEM (03.20.02)] (5.25-360k) 3.20 [Tandy 1000 OEM (03.20.02)] English 349.64KB 0
Microsoft MS-DOS 3.20 [Tandy 1000TX OEM (03.20.21)] (3.5-720k) 3.20 [Tandy 1000TX OEM (03.20.21)] English 473.92KB 0
Microsoft MS-DOS 3.20 [Tandy 1400 LT] (3.5-720k) 3.2 [Tandy 1400 LT] English 234.41KB 0
Microsoft MS-DOS 3.20 [Tandy 3000 OEM (03.20.01)] (5.25-360k) 3.20 [Tandy 3000 OEM (03.20.01)] English 249.6KB 0
Microsoft MS-DOS 3.20 [Toshiba T1100 Plus OEM] (3.5-720k) 3.20 [Toshiba T1100 Plus OEM] English 483.52KB 0
Microsoft MS-DOS 3.20 [Victor OEM] [French with English] (5.25-360k) 3.20 [Victor OEM] French with English 325.83KB 0
Microsoft MS-DOS 3.20 [Wang APC r3.20.21] (5.25-360k) 3.20 [Wang APC r3.20.21] English 20.43MB 0
Microsoft MS-DOS 3.20 [Zenith Eazy PC OEM] (1987) (3.5-720k) 3.20 [Zenith Eazy PC OEM] English 3.64MB 0
Microsoft MS-DOS 3.20 [Zenith PC OEM] (3.5-720k) 3.20 [Zenith PC OEM] English 216.16KB 0
Microsoft MS-DOS 3.20 [Zenith PC OEM] (5.25-360k) 3.20 [Zenith PC OEM] English 214.56KB 0

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