iM 4,1-14,4 Upgrading to Big Sur from Catalina

[Kashchei]

I have a 27" iMac from late 2012 with a 3.4 Ghz quad-core i7 with 32 GB of RAM on my desk in my office. It currently tops out at Catalina which runs great. However, software for my job has just been updated and requires MacOS 11 or later. How would I go about upgrading to Big Sur and is this even advisable? Any help you can give me will be invaluable--I have never done anything like this before and don't want to brick this machine.

 

[eyoungren]

OCLP contains everything you need to know. Walk through the steps, take your time and read through anything you don't understand (they explain it). For Ventura and above you'll need a USB 2.0 or better hub just for the process. Once you install root patches at the end, USB will be re-enabled. If you want to just use Monterey or less then you won't need that.

OpenCore Legacy Patcher

Experience macOS just like before

dortania.github.io