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 5.0, PC-DOS (then called IBM DOS) was just a rebranded IBM OEM version of MS-DOS with IBM's own versioning system. However, with version 5.0, IBM decided to continue PC-DOS development without Microsoft and renamed the product to IBM PC-DOS. Therefore, versions 5.00 and later are no longer equal to their MS-DOS counterparts.

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

PC-DOS 6.x

• PC-DOS:6.1 - Contrast to MS-DOS 6.X versions (6.0, 6.20)
• 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: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