![]() ![]() When programming processors and software, every piece of information that needs to be loaded has to have an address. It’s a little long and ultimately doesn’t matter unless you’re curious. If you don’t want a crash course skip this section. Those programs will not work on Catalina or later without being updated.īut first a little background. If you’ve been getting popup messages when launching some apps telling you that it’s not optimized this is exactly what that message is about. This has been coming for years, as Apple only released a few 32-bit Intel Macs in early 2006 when they first switched to Intel processors and started switching to 64-bit processors later that same year. Though the hardware requirements for macOS Catalina (due out sometime in October) haven’t changed from macOS Mojave (apart from dropping the 2012 Mac Pro–not to be confused with the Mac Book Pro), the one big change that has people concerned is that Apple is finally dropping support for 32-bit apps and going entirely 64-bit.
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