Editing Copland (operating system) (section)

===Another try===
Given this pressure, the collapse of Taligent, the growing problems with the existing operating system, after the release of System 7.5 in late 1994, Apple management decided that the decade-old operating system had run its course. A new system that did not have these problems was needed, and soon. Since so much of the existing system would be difficult to rewrite, Apple developed a two-stage approach to the problem.

In the first stage, the existing system would be moved on top of a new kernel-based OS with built-in support for multitasking<ref>{{Cite web |title=OS 8 Adds New Life to Mac Platform |url=https://archive.nytimes.com/www.nytimes.com/library/cyber/week/080897macos8.html |access-date=2024-03-07 |website=archive.nytimes.com}}</ref> and protected memory. The existing libraries, like QuickDraw, would take too long to be rewritten for the new system and would not be converted to be reentrant. Instead, the CPAS keeps applications and legacy code such as QuickDraw in a single memory block so they continue to run as they had in the past. CPAS runs in a distinct Copland memory space, so crashing legacy applications or extensions within CPAS cannot crash the entire machine.

In the next stage of the plan, once the new kernel was in place and this basic upgrade was released, development would move on to rewriting the older libraries into new forms that could run directly on the new kernel.<ref>{{cite magazine |url=http://www.guidebookgallery.org/articles/beyondwindows95 |title=Beyond Windows 95 |last=Miller |first=Michael J. |magazine=[[PC Magazine]] |pages=75–76 |date=October 24, 1995 |access-date=July 23, 2006 |archive-date=November 13, 2016 |archive-url=https://web.archive.org/web/20161113155700/http://www.guidebookgallery.org/articles/beyondwindows95 |url-status=live }}</ref><ref>{{cite web |url=http://www.bebox.nu/articles.php?s=articles/199701xx-PlanBe |title=Plan Be |last1=Bortman |first1=Henry |last2=Pittelkau |first2=Jeff |date=January 1997 |publisher=MacUser |access-date=July 23, 2006 |url-status=dead |archive-url=https://web.archive.org/web/20060618111545/http://bebox.nu/articles.php?s=articles%2F199701xx-PlanBe |archive-date=June 18, 2006}}</ref><ref>{{cite magazine |url=https://archive.org/details/MacUser9701January1997/page/n67/mode/2up |title=Plan Be |last1=Bortman |first1=Henry |last2=Pittelkau |first2=Jeff |date=January 1997 |magazine=[[MacUser (US edition)|MacUser]] |volume=13 |issue=1 |pages=64–72}}</ref> At that point, applications would gain some added modern features.

In the musical code-naming pattern where System 7.5 is [[code name|code-named]] "Mozart", this intended successor is named "Copland" after composer [[Aaron Copland]]. In turn, its proposed successor system, Gershwin, would complete the process of moving the entire system to the modern platform, but work on Gershwin would never officially begin.<ref>{{Cite news |last=Lewis |first=Peter H. |date=1995-08-22 |title=PERSONAL COMPUTERS; Intriguing Promises From Apple |url=https://www.nytimes.com/1995/08/22/science/personal-computers-intriguing-promises-from-apple.html |access-date=2024-03-07 |work=The New York Times |language=en-US |issn=0362-4331}}</ref>