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MacOS 9 was awful , a product of a rather unpleasant era for Apple really. I wanna say through 9.2.1 maybe even through to 9.2.2 the OS had a nasty habit of corrupting your disk. Hardware-wise Apple used CMD64x based IDE controllers so when OS9 wasn't screwing with your data the hardware itself would. There absolutely were animations e.g. when closing a Finder window, but they were much lighter weight. As far as I'm…
W95 and W98 werent' much better until W98SE. Linux distros were rough but mega-stable.
To be clear, Win98 was a garbage fire of an OS (when it came to stability); which makes it so much worse that Mac OS 8-9 were so bad.