IBM PC-DOS

PC-DOS (Personal Computer Disk Operating System) is an operating system for x86 based personal computers developed by Microsoft and IBM (later by IBM exclusively). Up to version 5.00, PC-DOS (then called IBM DOS) was just a rebranded IBM OEM version of MS-DOS, though IBM used their own versioning system. However, with version 5.00, IBM decided to continue PC-DOS development without Microsoft and renamed the product to IBM PC-DOS. Therefor, version 5.00 and later are IBM's own creation independent of MS-DOS. The first version released was version 1.00 and the last version was PC-DOS 2000, an updated release of PC-DOS 7.0.

Known versions

PC-DOS 1.x

• PC-DOS:1.00
• PC-DOS:1.10

PC-DOS 2.x

• PC-DOS:2.00
• PC-DOS:2.10

PC-DOS 3.x

• PC-DOS:3.00
• PC-DOS:3.10
• PC-DOS:3.20
• PC-DOS:3.30

PC-DOS 4.x

• PC-DOS:4.00

PC-DOS 5.x

• PC-DOS:5.00 - First version after the breakup
• PC-DOS:5.00-V - Japanese PC-DOS 5.00
• PC-DOS:5.02
• PC-DOS:5.02-V - Japanese PC-DOS 5.02

From this point on, PC-DOS versions complement MS-DOS versions (e.g. MS-DOS 6.00 -> PC-DOS 6.10 -> MS-DOS 6.20 -> PC-DOS 6.30)

PC-DOS 6.x

• PC-DOS:6.1 - 1993-11
• PC-DOS:6.10
• PC-DOS:6.30

PC-DOS 7.x

• PC-DOS:7.00 - 1994-10-13 Beta
• PC-DOS:7.00 - 1994-10-13 Beta revision 3
• PC-DOS:7.00
• PC-DOS:7.10 - Existance unconfirmed
• PC-DOS:J7.00-V - Japanese PC-DOS 7.00
• PC-DOS:P7.00 - Chinese Simplified PC-DOS 2000
• PC-DOS:2000 - PC-DOS 7.0 with Y2K and other fixes on a single CD-ROM