IBM PC DOS (an acronym for IBM Personal Computer Disk Operating System), [nb 1] also known as PC DOS or IBM DOS, is a discontinued disk operating system for the IBM Personal Computer, its successors, and IBM PC compatibles. It was sold by IBM from the early 1980s into the 2000s.

IBM PC-DOS was an IBM branded version of MS-DOS licensed from Microsoft for use on the IBM PC system. Versions of PC-DOS paralleled that of MS-DOS up until version 6.1, where PC-DOS was independently maintained by IBM up until 7.1, the last version.

Apr 30, 2017 · Please download files in this item to interact with them on your computer.

This article details versions of MS-DOS, IBM PC DOS, and at least partially compatible disk operating systems. It does not include the many other operating systems called "DOS" which are unrelated to IBM PC compatibles.

Jul 8, 2020 · This pack inclued all archived IBM DOS installers.

Apr 8, 2022 · This is IBM PC-DOS 7.1, as found on this dropbox page. The file is a bootable floppy image, with either 7-zip or XZ compression. This version of PC-DOS is unique in that it supports FAT32.

PC DOS 1.00 was completed in August 1981 and announced at an IBM press conference on August 12, 1981, when IBM introduced the original IBM PC (Model 5150). It was released on one single-sided (160Kb) diskette, and included 23 BASIC Programs .

IBM PC-DOS was an IBM branded version of MS-DOS licensed from Microsoft for use on the IBM PC system. Versions of PC-DOS paralleled that of MS-DOS up until version 6.1, where PC-DOS was independently maintained by IBM up until 7.1, the last version.

IBM 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.

Mar 22, 2025 · IBM PC-DOS (The IBM Personal Computer DOS, also known as IBM DOS) was an operating system for x86-based IBM personal computers manufactured and sold by IBM. The very first version of PC DOS was released in August 1981 along with the IBM 5150 PC.