![]() ![]() Truth be told, non-developers will probably never interact with Universal 2 knowingly. For laypeople, this just means that when developers export a program they’re working on, they can export it in a format that is readable by Intel and M1 chips. Universal 2 is a service on Mac (specifically in Xcode 12) that allows developers to compile code for x86 and ARM architectures. We already know what Rosetta 2 is, so let’s jump into Universal 2. But what’s the difference, and why do you need both? If you’ve heard of Rosetta 2, you might’ve also heard of Universal 2. You don’t lose the apps you love and Apple doesn’t have to sacrifice its decision to switch to ARM. Rosetta 2 takes the commands being issued from Intel-based apps and automatically translates them into ARM commands. The M1, however, uses ARM architecture, so the commands issued by Intel-based apps can’t be processed by the M1 on its own. The reason Intel-based apps can’t run on the M1 processor is that they issue commands for an x86 architecture. It’s the bridge between Intel apps and the new ARM apps that M1 Macs require. On M1 Macs, Rosetta 2 serves a similar purpose. It aptly derives its name from the Rosetta Stone, a historical artifact that served as a way for people of different languages to communicate. The tech behind Rosetta 2 is pretty interesting. Without it, your Mac can’t interpret Intel programs. Rosetta 2 is an app that runs in the background and allows Intel-based apps to run on your M1 Mac. Or, more specifically, they created Rosetta 2. To ease this transition, Apple created Rosetta. ![]() Imagine buying a new Mac and only being able to use Apple’s pre-installed programs. Of course, Apple and its users don’t want to lose all of the apps that were previously available on Mac. ![]() Apps for Mac now have to be written for a new standard. The M1 uses a different architecture from the previously-used Intel chips, which means that the M1 Macs can’t easily run the same apps that they used to be able to. ![]() However, it’s also created a tricky transition period for Apple. The new M1 chip is an impressive feat of engineering and one of the major selling points of the new MacBook Air, MacBook Pro, and Mac mini.
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