Today I will show you how to Install macOS 11 Big Sur on an Unsupported Mac.
On top you can learn how to fix macOS Big Sur problems (can't Install on Macintosh HD) here; https://iboysoft.com/mac-data-recover...
To be clear this guide shows you how to install Mac OS Big Sur, it is up to you to backup your data first and use Big Sur at your own risk, I am not responsible for any loss of data etc...For me as you can see I installed Big Sur and it worked for me, however due to unforeseen circumstances I can't help with all install steps if it doesn't work out for you. I also can't support or guide you on the use of additional Apps you may install like for example Office (word, powerpoint, excel), Final Cut Pro, Photoshop etc... they may work - they may not. However do help others in the comments if you get Apps to work what other are struggling with.

Please make sure your Mac is Compatible here;

https://bensova.gitbook.io/big-sur/su...

Using Patched Sur Patcher; I have successfully installed MacOS Big Sur 11 onto a 2012 MacBook Pro and you can to on your Intel Mac!
You will need a USB stick and a copy of MacOS Big Sur 2020 and the patcher.

The USB stick I have used and works with MacOS Big Sur is this one;
UK - https://amzn.to/2UKD7EW​

You can download this from Patched Sur website;

https://github.com/BenSova/Patched-Sur

0:00 Intro
0:20 DO NOT SKIP - Unsupported Macs with Big Sur
2:51 Install Part 1 - USB Setup
11:20 Install Part 2 - Installation
15:20 Install Necessary Patches for your Mac