Patched Sur Installation And Thoughts (Late 2012 21.5-inch iMac)
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- čas přidán 23. 08. 2024
- My Late 2012 iMac no longer gets OS updates past macOS Catalina (quite honestly a terrible release for a machine like this). So what is it like when you use an unofficial patcher to upgrade to the current Big Sur release of macOS, especially on a 5400 rpm drive? Well, long-term will be a gray area, but for now it seems fine.
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![Install Big Sur on Unsupported Mac with Patched Sur - Full Walkthrough! [THE EASY WAY!!!] 2012-2013](http://i.ytimg.com/vi/hxBffgBg8Hg/mqdefault.jpg)
![Install Big Sur on Unsupported Mac with Patched Sur - Full Walkthrough! [THE EASY WAY!!!] 2012-2013](/img/tr.png)
![macOS Big Sur on Unsupported Macs [2008-2013] OpenCore Legacy Patcher!!!](/img/n.gif)
I just successfully upgraded my late 2012 iMac to Big Sur using this video as my instruction manual. Thank you for your practical and useful information.
I just purchase 2012, how is the big sir working on the 2012
If anyone is having an issue with installation getting stuck even after multiple restarts. Try checking if csrutil is disabled or not. I rebooted in recovery disabled using csrutil in terminal. Then it worked like charm by clicking the Install Button. Just an add on. Cheers
I would recommend putting in a SSD if you haven’t yet, it makes a huge difference.
Thanks, I was having the same issue with the crossed out circle until I hit efi then restarted and selected big sur installer and then it worked.
After u pressed EFI boot, it allowed u to use the Mac OS Big Sur Installer. The EFI Boot was meant to shut ur iMac off, don't know why, but it was written that way, so basically this EFI Boot allowed u to access this Mac OS Big Sur Installer.
Great video. Have you tried running your OS on an external SSD? Not sure if my HDD was dying in my late 2012 iMac 21.5in, but it was giving me read/write speeds of around 40MB/s. I just installed Catalina (not gone for Big Sur yet) on a Samsung T7 1TB SSD and run it externally. It's improved performance tenfold (literally!) - no beach ball on the System Prefs - its super zippy!
i had issues with the catalina on my imac not sure why it was so slow i had to go back to high sierra this is very helpful i hope dosdued comes with his own
He said that he won’t be making one for Big Sur because most machines that would be “supported” don’t have Metal graphics acceleration support. Only computers from 2012 and onward do, or an older Mac Pro with a Metal-supported graphics card.
@@jwoolery99 oh ok what os needs metal support bc when i was running cat it was so slow now i think it needs a fresh install then work but not sure but it could of been that i was running it via usb via ssd not sure
High Sierra is the last OS that doesn’t completely enforce the Metal API for programs to run. Mojave and Catalina use an OpenGL Fallback kind of mode because the UI is primarily operated in Metal. That’s why for a limited time you could use Mojave and Catalina unofficially. Nowadays it’s not worth it because more apps are using Metal which will just cause more apps in Mojave and Catalina to crash. For basic use cases it’ll be fine but that’s about all you can do with it anymore, so if it was me I’d just stick to High Sierra (Mojave at the newest). It’s just going to run better than Catalina and apps, while older, will work at least.
@@jwoolery99 thats what i am gonna do is still with high sierra so far my imac is working good
You can upgrade the gpu to support the newer os versions
We need a gaming video for it! You haven’t made one yet!
wait... did you make a copy of all your files and applications or they just saved natively on your computer?
what'd you do about wifi?
Can you make a kubuntu 7.04 overview video , I really like that series!
I’ll see if I can make that happen in the future. I have the install image, just gotta do it when it comes along in the queue.
@@jwoolery99 ok , just a quick tip for versions that aren’t in the old version release , go to web archive and find the month and year the version came.
I don't even know what to say... you didn't read the instructions... Also, I love how many things you think are intentional, haha.
¯\_(ツ)_/¯
BenSova is right
You had to EFI boot then it will shut down then you can boot from the usb.
why doesnt my password work? It asks for Root Permission right before it erases the drive. I turned off root permission in disk utility and still doesnt work.
I am about to do this to a 21.5 late 2012, but i'm also going to be doing an ssd upgrade. I'm hoping that will help with alot of the performance issues that you had.
guys, what cpu usage in Big Sur on you old mac?
hi, where do i download the patch ? do you have the link ?
I have a late 2012 imac 27inch. It is running macOS Sierra. Can I ugrade to Big Sur direct or do I have to load catelina first?
Using this method, you MUST go to Catalina first. I would recommend going to Catalina anyway and installing any available updates first to make sure your EFI is up to date, especially since you mentioned you are running 10.12 Sierra, if it has not run a newer version of macOS since then, it is very important to do so. Going to Catalina will also upgrade your drive to APFS which is required to install software updates in Catalina's Software Updates preferences pane.
@@jwoolery99 does not work on imac 2012 27,copy to usb error 1x250,my os Catalina 10.15
I have imac 2011 21.5" i5, try to install and not show the HD after i install Patched Sur, what should i do, thanks
2011 is not recommended for Big Sur, best to stay on High Sierra with those machines because of their problematic graphics. Unless you switched it out with a Metal-supported graphics card, then that’s different.
What about over mac os use a catalina or mojave patcher?
So dosdude didn't make a patch yet?
nevermind I saw that other comment
I need to use vmware fusion 12. How can I make it work?
Ah, I guess it just works without doing anything further.!
my imac in mac os x
Does the Appstore work?
Yes.
Mr. bean? 🤣😅🤣
Wow you talking a lot
Ok