PC DOS 3.1

IBM PC DOS is a DOS system for the IBM Personal Computer and compatibles, manufactured and sold by IBM from the 1980s to the 2000s.

Released in March od 1985 PC DOS 3.1 is an updated version of PC DOS 3.0. PC DOS 3.1 was the first OS to provide a network support.

PC DOS 3.2 followed in Dcember 1985.