First video interview with Tim Paterson, creator of DOS, on whether he copied CP/M

Scobleizer · x · 2026-09-13

Robert Scoble releases the first video interview Tim Paterson, the programmer who wrote DOS at Seattle Computer Products in the late 1970s before Microsoft bought it.

Scoble long suspected DOS was copied from Gary Kildall's CP/M, then the top-selling OS, and asked Paterson directly—saying the answer gave him much more insight into the beginnings of the PC era. Jim Harding, an early employee of Tim's, joins the discussion as Scoble drives to CES.

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