His role in the MS-DOS story is pivotal as he wrote the operating system 86-DOS, which was sometimes referred to as QDOS (Quick and Dirty Operating System). Another important feather in Paterson's ...

In 1981, Microsoft hired Peterson and bought the OS, which was called 86-DOS, for $50,000. Microsoft needed an operating system for the IBM Personal Computer, and for a while, they worked with IBM ...