There were other DOSs, but even by 1989 the use of unqualified "DOS" was usually...

caf on Feb 15, 2017 | parent | context | favorite | on: Can I Talk to that William Fellow? He was so Helpf...

There were other DOSs, but even by 1989 the use of unqualified "DOS" was usually taken to mean "IBM-compatible PC running MS-DOS" (eg. "Our school has both Apple and DOS computers in the library").