IBM PC-DOS 2000 Released in 1998 by IBM For IBM PC compatibles PC-DOS 2000, AKA "IBM PC DOS 7.00, revision 1", adds little more than a handful of Year 2000 compatibility fixes. It is marketed as "PC-DOS 2000" but it reports itself as "IBM PC DOS 7.00, revision 1". Archive includes six 3.5" 1.44mb disk images.