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10 OSes We Left Behind
CWmike writes "As the tech community gears up to celebrate Unix's 40th birthday this summer, one thing is clear: People do love operating systems. They rely on them, get exasperated by them and live with their little foibles. So now that we're more than 30 years into the era of the personal computer, Computerworld writers and editors, like all technology aficionados, find ourselves with lots of memories and reactions to the OSes of yesteryear (pics galore). We have said goodbye to some of them with regret. (So long, AmigaOS!) Some of them we tossed carelessly aside. (Adios, Windows Me!) Some, we threw out with great force. (Don't let the door hit you on the way out, MS-DOS 4.0!) Today we honor a handful of the most memorable operating systems and interfaces that have graced our desktops over the years. Plus: We take a look back at 40 years since Unix was introduced."
All current OSes? Try something other than Windows, you might be surprised.
Ah, the many hours configuring himem ... the multiple memory manager profiles, the keeping straight of incompatibilities between extended and expanded memory, finding the settings that would work with Wing Commander, changing them to work with Star Trek 25th Anniverary ... those were the days.
The days of grinding awfulness, but days, none the less. It taught me a whole lot about how DOS did business, that's for sure.
While there are lots of little things in this article that indicate the author has never used anything that didn't come out of Cupertino, the one thing that bugged me the most was his willful ignorance of preemptive multi-tasking.
In preemptive multitasking, the OS gives each application running a time-slice to do their thing and then, typically, takes control and gives the next app it's turn. This means you can put any program you want in the background and it will keep on running. We take this for granted today, but prior to 1995, most users never had this luxury. Amiga was probably the earliest OS to go sort of mainstream that had preemptive multitasking.
The article says:
"It wasn't until the late 1990s that Windows NT, OS/2 and the Mac OS were able to multitask as well -- and they required vast hardware resources to do it."
Wrong. Windows95 had full preemptive multitasking. It didn't have protected memory. That feature would stay in the NT stream until XP. However, mainstream MS users enjoyed preemptive multitasking from 1995 on.
MacOS, on the other hand, never had preemptive multitasking. Later versions had cooperative multitasking which relied on programs being specially written to support it. However, just one app running without that support was all it took to bring your Mac to a screeching halt. The late 90's were a horrible time to be a Mac user, and Apple's market share declined sharply during this period because of how primitive the last versions of MacOS were compared to everything else on the market. After the return of Jobs in the late 90's, Apple started to turn around by making flashy hardware, colored iMac's, those god-awful puck-mice, etc.. It wasn't until OSX came along that Apple was able to attract (at least some) users more interested in working on their macs than in how they looked.