Page "Copland (operating system)" Paragraph 40

With the return of Jobs, this rebranding also allowed Apple to exploit a legal loophole to terminate third-party manufacturers ' licenses to System 7 and effectively shut down the Macintosh clone market.

Later, Mac OS 8. 1 finally added the new filesystem and Mac OS 8. 6 updated the nanokernel to handle preemptive tasks.

Its interface was Multiprocessing Services 2. x and later, but there was still no process separation and the system still used cooperative multitasking between processes.

Even a process that was Multiprocessing Services-aware still had a portion that ran in the blue box, a task that also ran all single-threaded programs ( and the only task that could run 68k code ).