System 0.85

System 0.85, produced in 1983, was the system provided on the original Macintosh Guided Tour disk. It was released in 1983 with the original "Finder" labeled as 1.0; it booted directly into the Guided Tour software. This system only runs on the original Macintosh computer with 128k RAM, and pre-dates the version released with the Macintosh 128k.