Rosetta is the system that translates instructions for x86 processors to ARM, and that allows running macOS software for Intel CPUs on the new Apple Silicon Macs with the M1. It is an essential component to ensure that the vast majority of programs compiled for Intel processors work on new Macs, while developers are updating their programs and adding native compilations for the new ARM architecture of Apple chips.
In the past, Rosetta was used exactly the same, but this time it was Intel CPUs that ran compiled programs for PowerPCs, the previous architecture that was used before 2006. It was one of the cornerstones of that transition, never better said. Now, it plays the same role in the transition from x86 to ARM architecture.
However, in beta 3 (third test version) of macOS 11.3 Big Sur, there have been mentions of the uninstallation of this component, which is not an emulator, but rather an instruction translator.
Rosetta works really well, and the M1 is capable of running x86 programmed software very fluently, with no speed issues whatsoever, often outperforming even the same program on the latest Intel x86 CPUs on Mac models that run. sell today. It is frankly essential because many programs do not offer ARM version yet. For example, the popular Teams in these days of pandemic or Dropbox, among others, would stop working without Rosetta.
That Apple now has a method prepared to eliminate Rosetta, as it says there, in some regions It does not mean that they are going to uninstall it… simply that there is a process in the macOS update that warns of its uninstallation. Rosetta may not be available in some countries for patent or distribution rights reasons, or for any other legal reason, but even then macOS 11.3 is likely to arrive in its public version for everyone, and Rosetta will follow. working everywhere. Hopefully, that is the case, because as noted earlier, Rosetta is a must in this transition from Apple’s ARM to x86 processor architecture, and in fact, Apple is going to continue to sell Macs with Intel CPUs for some time to come. In the presentation of this transition the company mentioned 2 years of transition, so Rosetta should be available for at least those two years, and so far it’s only been a few months. So for now, nobody gets upset.