PC-MOS/386 1.02D Demo Disk
Released in 1987 by The Software link, Inc.
For IBM PC compatibles.

This is a minimized bootable version of PC-MOS with a 30 minute trial
limit.

PC-MOS, released by The Software Link, was a multi-user multitasking 
OS that had compatibility with MS-DOS applications and allowed users 
to connect to it via terminal.