An anonymous reader quotes the Ars Technica report: Bypassing the official macOS system requirements to run newer versions of software on older, unsupported Macs has a long history. Tools like XPostFacto and LeopardAssist can help older PowerPC Macs work with newer versions of Mac OS X, a tradition carried on into the modern era by dosdude1’s patches for Sierra, High Sierra, Mojave, and Catalina. For Big Sur and Monterey, OpenCore Legacy Patcher (OCLP for short) is the best way to get newer versions of macOS on older Macs. This is a fork of the OpenCore Hackintosh bootloader and is updated quite often with new features, fixes and compatibility for new macOS versions. OCLP developers have acknowledged that supporting macOS Ventura will be difficult, but they’ve made progress in some important areas that should make some older Macs last a little longer.

[…] First, while macOS technically does not include system files for Intel pre-AVX2 processors, Apple’s Rosetta 2 software still includes these files, as Rosetta 2 emulates the capabilities of an x86 pre-AVX2 processor. By extracting and installing these files in Ventura, you can re-enable support on Ivy Bridge and older CPUs without AVX2 instructions. And this week, Grimaluk showed off another breakthrough: Support for desktop graphics on older Macs with Metal support, including machines as old as the 2014 5K iMac, the 2012 Mac mini, and even the 2008 cheese grater-style Mac Pro tower. The OCLP team still has other challenges to overcome, not the least of which is automating all of these hacks so that users without a deep technical understanding of the macOS core can continue to configure and use the bootloader. Grimaluk I still won’t think about the timing to officially support Ventura in OCLP. But given the progress made so far, it seems likely that people with Macs 2012 and newer will still be able to run Ventura on their Macs without giving up graphics acceleration or other important features.

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