OpenCore-Legacy-Patcher

> past their intended lifespan Thanks to the community, you can install macOS 15 (or older) on unsupported macs (as old as 18 years) https://dortania.github.io/OpenCore-Legacy-Patcher/MODELS.ht... https://github.com/dortania/OpenCore-Legacy-Patcher

Yes MacPorts is the way. I switched after a new MacOS release meant mine was too old - brew update uninstalled a bunch of stuff I had been using then it stopped and let me know. There's also https://github.com/dortania/OpenCore-Legacy-Patcher for the adventurous.

It looks like it's still bigger than the logic board on the 12" MacBook from 2015.[1] I really wish Apple would resurrect that form factor, as every other MacBook since has seemed bulky in comparison. Thanks to OpenCore Legacy Patcher[2], I still haven't gotten a newer mac. With a modern M series chip, it wouldn't have such rough tradeoffs in battery life and performance. I'd definitely buy it. 1. See step 11 on https://www.ifixit.com/Teardown/Retina+MacBook+2015+Teardown... 2. https://github.com/dortania/OpenCore-Legacy-Patcher

In case you weren't aware: https://github.com/dortania/OpenCore-Legacy-Patcher macOS Big Sur and newer on machines as old as 2007 macOS Big Sur, Monterey, Ventura, Sonoma and Sequoia Personally I'm hapy with my old macOS in no small part thanks to https://www.macports.org

> and couldn't upgrade because Apple didn't support my hardware anymore. If you really want, you may be able to upgrade the OS anyways with https://github.com/dortania/OpenCore-Legacy-Patcher. Or use Homebrew on the old OS with TigerBrew (https://github.com/mistydemeo/tigerbrew), but people online suggest MacPorts, not only because it has first-party support but also because it’s apparently better designed.

Yes, we definitely need something like this for the iDevices - it's outrageous that an old but capable device like iPad Air (1st generation) has to become e-Waste simply because Apple has decided not to support it any longer and won't allow other Operating Systems to run on it. Mac's already have the OpenCore Legacy Patcher - https://github.com/dortania/OpenCore-Legacy-Patcher - that allow you to run newer macOS versions on older and even unsupported Macs.

This[1] worked well to upgrade old Macs that were stuck on old versions of macOS for me, if you're not choosing to stay on older versions for other reasons. [1] https://github.com/dortania/OpenCore-Legacy-Patcher

> …on my 2011 Mac Mini which Apple stopped allowing upgrades on past macOS 10.13. In case you're one of today's lucky 10,000, OpenCore Legacy Patcher supports Macs going to back as far as 2007: https://github.com/dortania/OpenCore-Legacy-Patcher

It doesn’t fit every use case, and it does have some caveats, but I’ve been happy with Open Core Legacy Patcher. For offline systems, the trade offs are minimal. https://github.com/dortania/OpenCore-Legacy-Patcher

MacOS up to version 13 runs well using OpenCore even on my 2010 iMac (I did upgrade it with a metal compatible GPU). Looks like the only issue with your MacBook Air is there may be some metal issues. https://github.com/dortania/OpenCore-Legacy-Patcher/issues/1... If those don't look like a problem for you, I'd definitely suggest giving it a try. MacOS 13 should give you at least 3 more years of use out of it. Going beyond MacOS 13 I don't think is worth it. MacOS 14 is noticeably slower on my 2010 iMac, and there aren't any new features it can take advantage of anyways.

Cool project. Thanks for posting. I may look into it to breathe life into my beautiful old iMac. Are you using it for your old macs? Of course, it’s not perfect but what is. https://github.com/dortania/OpenCore-Legacy-Patcher/releases... “As to be expected, macOS Sequoia support is still in active development. This is a community-driven project, and as such we ask users to keep expectations in check and use older OSes if you encounter issues that affect you.”

You can still install latest macOS with some work.[1] If you have places for full backup. I have yet to encounter any issues. It will probably take a few hours of hassle which for a lot people is not worth it. I want to do it just to see how far I can get out of this machine. You may want to do some research before trusting my words. [1]https://github.com/dortania/OpenCore-Legacy-Patcher/

Not really suitable for a corporate environment but in case you weren't aware: https://github.com/dortania/OpenCore-Legacy-Patcher macOS Big Sur and newer on machines as old as 2007 macOS Big Sur, Monterey, Ventura, Sonoma and Sequoia