I just wanted to let you all know about this, as it might not be widely known in the Applevis community that this is possible, but I have managed to install Mac OS Ventura on the MacBook Air that I was just given a few days ago. It's a 2012 MacBook Air, so very old and not fast in the least bit. It only has 4 gb of ram, so pretty sad that that can't be upgraded, but I did have a friend help me out in replacing the 128 gb ssd with one that is 512 gb, and we put a new battery in it. I literally finished doing this about an hour ago or less, and I can confirm it works, the process is mostly Voiceover friendly, but in the first little bit, some sighted assistance may come in handy depending on your skill level.
How is this done? You use an app called Open Core Legacy Patcher. That app works great with Voiceover. I was pleasantly surprised to find this out.
After you go through and build your installer, and then patch the efi partition of that installer, comes the part where you may need sighted assistance. When you restart, you hold down the option key like you would to choose between Mac or Windows, if you've ever ran Bootcamp. You have to press enter on EFI Boot, then very quickly right arrow once over to your usb installer, and enter again. I didn't do it fast enough a few times, so it ended up booting me right back in to the OS, not the installer.
Once you actually get in to the installer, VO works, and it's just like installing any other version of Mac OS from a flash drive.
Why do this? Two reasons really. First is security, because the last officially supported OS by Apple for my Mac was Catalina, so that's pretty far back, and a lot of security exploits have been patched since then. Secondly? I'm a geek, and upon hearing it was possible, I just wanted to see if it would actually work.
Next step, get Windows up and running via Bootcamp.
Observations so Far? Well, with only 4 gb of ram, and a dual core processor, it's slow. Really, incredibly slow. Not so bad once you actually get in to the app you want to work with, but between the press to launch that app, and the time it actually launches, it can be 10-15 seconds. I mean, at times you would think you were back to spinning hard drive days.
Still, I think it was worth doing. I'll report back with any further developments. If you have an older Mac, but perhaps a little newer than this one I have, and Apple has stopped supporting it, you just might want to consider this as an option. You must understand, there is risk in anything like this you decide to do, and some features may not work 100% correctly, and you do this, knowing that is a possibility. Each person has to decide whether or not they want to take that risk. I did, since I just got the thing, and had nothing important on it, so it wasn't going to be a huge issue if something went wrong, but in my case, nothing did. I still had all my settings, the few files I downloaded, etc.
Happy hacking folks. :)