UPDATED!!! You can Install macOS Big Sur on Unsupported Macs from 2008-2013! I'll show you step-by-step how to use OpenCore Legacy Patcher to install macOS Big Sur on your old Mac! CHAPTERS & UPDATES BELOW.

OCLP UPDATES 2/15/24:
#1 - OpenCore Legacy Patcher current version = 1.3.0
#2 - The FINAL version of macOS Big Sur is 11.7.10

0:00 Welcome & Intro
0:40 Updates & Chapters in comments section!
0:58 Important Notes before we start the install process.
5:51 Start of the walkthrough - Mid 2010 Mac mini
6:06 Download OCLP GUI Application from GitHub
7:13 Opening OCLP App for the first time
7:32 Download macOS Big Sur full installer from OCLP.app
8:52 Use Disk Utility to format and prepare USB Flash Drive
10:40 Download complete! Creating Big Sur USB installer
11:56 USB Installer complete! Now Install OCLP to USB.
12:57 USB Done! Let’s click reboot + Hold Down OPTION key
13:19 Option key booting with EFI Boot to USB Big Sur Installer
13:59 Pick an option - Option #1 Upgrade or Option #2 Erase & Install
14:33 Option #1 Big Sur Upgrade Install (Retain files & apps)
15:02 Option #2 Erase HD & Fresh Install of Big Sur (Start fresh)
15:51 The install of macOS Big Sur has started!
16:24 First of multiple reboots before the install finishes
16:34 Install Complete! Now at the Setup Assistant Window.
16:42 We are now on the macOS Big Sur Desktop.
17:14 New auto popup to install OCLP to internal Hard Drive!
17:49 Installing OCLP Bootloader to Internal Hard Drive
19:15 Reboot - Hold down Option key & select EFI Boot
20:19 Opening OpenCore Legacy Patcher app
20:46 Turning off Show Boot Picker for seamless boot (optional)
21:59 How to install Big Sur Software updates & Security Updates
23:18 Does my Mac need Post Install Root Patches? How to Check
23.33 After installing an OS update - Automatic root patch system
24:38 Troubleshooting OpenCore Legacy Patcher Issues
25:11 A big thank you to Mykola & all OCLP Developers!
25:48 Thank you! Let me know if you have any questions.

I want to thank both Mykola Grymalyuk (khronokernel) & Dhinak G (dhinakg) for your work on OpenCore Legacy Patcher + all of the contributing developers that help maintain the patcher! OCLP will bring new life to thousands of Macs saving them from the recycler!

OpenCore Legacy Patcher app download
https://github.com/dortania/OpenCore-...

Direct Download Link macOS Big Sur Full installer InstallAssistant.pkg . - https://mrmacintosh.com/macos-big-sur...

SUPPORTED MAC MODELS LIST
https://dortania.github.io/OpenCore-L...

Troubleshooting OpenCore Legacy Patcher
https://dortania.github.io/OpenCore-L...

Troubleshooting Acceleration Issues
https://dortania.github.io/OpenCore-L...

Having a issue? - OpenCore Legacy Support Discord Server
  / discord  

OpenCore Legacy patcher submit an issue
https://github.com/dortania/OpenCore-...

MacRumors Thread
https://forums.macrumors.com/threads/...

Support OpenCore Legacy Patcher
https://dortania.github.io/OpenCore-L...

Support Mr. Macintosh
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http://paypal.me/mrmacintoshblog

DISCLAIMER: Please understand that installing macOS Big Sur on your unsupported Mac is a best effort by the community. A ton of work went into getting the patcher to work! Some things might not work exactly right but it's really really close. I would not recommend installing on a system that you rely on for work or school. ALWAYS BACKUP YOUR FILES FIRST BEFORE YOU UPGRADE! The good news is that you are getting the latest security fixes from Apple. Some might argue that upgrading to Patched Big Sur makes your Mac safer since Apple is no longer fixing security issues on 10.14 and below.

macos Big Sur old mac

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