Since then, several more distinct desktop and server editions of macOS have been released. MacOS was first released in 1999 as Mac OS X Server 1.0, with a widely released desktop version- Mac OS X 10.0-following in March 2001. To ease the transition, versions through 10.4 were able to run Mac OS 9 and its applications in a compatibility layer. The transition was a technologically and strategically significant one. However, the current macOS is a Unix operating system built on technology that had been developed at NeXT from the 1980s until Apple purchased the company in early 1997.Īlthough it was originally marketed as simply 'version 10' of the Mac OS (indicated by the Roman numeral 'X'), it has a completely different codebase from Mac OS 9, as well as substantial changes to its user interface. That system, up to and including its final release Mac OS 9, was a direct descendant of the operating system Apple had used in its Macintosh computers since their introduction in 1984.

I'll fix that now.The history of macOS, Apple's current Mac operating system formerly named Mac OS X until 2012 and then OS X until 2016, began with the company's project to replace its 'classic' Mac OS. The problem is that most folks are 'lazy' and don't want to put the effort into a clean install.Īh, you're right- that's actually MY fault, not Roger's.

I've had friends with Macs and iOS devices with slowness problems, and a clean install usually resolves the issues about 99% of the time. As much as Microsoft and Apple have tried, upgrades still never beat a clean install. This is a drastic timesaver in terms of bringing a machine up to the current OS in an easy fashion if booting from Internet recovery is required.Īs for the 'slowdowns after updates', its all about the cruff. This isn't true - Macintosh Internet recovery previously installed the original operating system that shipped with the hardware - not when problems were occurring. In fact Apple has faced multiple lawsuits over the issue, arguing that company knowingly ignored compatibility issues since it could push people into buying newer hardware. With iOS, some users have complained of slowdowns after major updates. The original behavior had been in place since OS X Lion, which shipped in July 2011. The previous recovery method, still done by hitting Command-R during startup, restores a Mac to the version of macOS/OS X that it was on before the problems started, blogger Thomas Brand noted on Thursday.

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