I thought I was reasonably early to the party, but the first Mac I owned – an SE 30 – was running System 6.06 when I got it & after a brief foray with 6.06 we had 6.07 with actual multi-tasking…
…but what machine ran System 1?
…& was it even called that at the time?
Best Answer
According to EVERYMAC, the Macintosh Original (128k), 512k, and 512ke (ED) were the only versions that were shipped with System 1.