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How to Create OpenCore EFI for macOS Big Sur

How to Create OpenCore EFI for macOS Big Sur

macOS Big Sur 11 with a new redesigned UI interface, Control Center, is pretty interesting to install on your Macs or Hackintosh PC. With new redesigned curved round edges macOS Big Sur 11 looks pretty attractive. Overhaul, macOS Big Sur announced one of the biggest releases of Apple operating system for Mac computers. And macOS Big Sur 11 is the first operating system by Apple Inc that supports Intel-based processors. Usually, Apple wanted to release macOS Catalina with this feature but finally released macOS Big Sur 11 with new +85 features and a new version.

macOS Big Sur 11 with the fastest Safari browser ever in the history of Apple operating system for Macintosh computers looks great. On the other hand, lots of changes to the Message interface App, and other several Apps. macOS Big Sur 11 is available in Beta software update, it means there is a big chance for developers to test macOS Big Sur on their PCs.

However, after installing macOS Big Sur on PC-Hackintosh PCs most of the users faced the “EFI” file installation. Due to that, we have decided to show you through this guide how to create OpenCore EFI for macOS Big Sur.

What is EFI File System?

The EFI (Extensible Firmware Interface) system partition or ESP is a partition on a data storage device (Usually a hard disk drive or solid-state drive) that is used by computers adhering to the Unified Extensible Firmware Interface (UEFI)

What is OpenCore?

OpenCore is an alternative bootloader to CloverEFI to Chameleon. It is not only for Hackintosh and can be used on real Macs for purposes that require an emulated EFI. It also aims to have the ability to boot Windows and Linux without the need for using different acpi tables. It has a clean codebase and aims to stay close to how a real mac Bootloader functions. Kext injection has been greatly improved.

Create OpenCore EFI for macOS Big Sur

For the purpose of creating OpenCore EFI for macOS Big Sur you will require “OC Gen X Pro” “OC Builder” “OpenCore Configurator” “SSdts” and “Dsdts” according to your system and laptop, also the latest version of Xcode which you can get it from Mac App Store.

Before getting started to Create OpenCore EFI for macOS Big Sur, you have to download the required files from down below links.

Note: The OC Gen X Pro will generate obsolete EFI which can not be used for macOS Big Sur 11. So the only purpose of using OC Gen X is that it creates good Config.plist and Fukex as well.

  1. Download the required files and at the first step open the OC Gen X Pro for creating Config.plist. When OC Gen X opened, at the welcome window on the “System Type” tab, you can select the accordance with your system processor’s and codename and in my case, it’s a coffee lake.
Coffee Lake
Coffee Lake

2. Select the “Kext” tab click on the “Essential” tab and deselect the “Lilu, VirtualSMC” option.

Essential
Essential

3. Select “USB” tab and deselect the “USBInjectAll”

USB
USB

4. Select “Firmware Drivers” tab, and from the “UEFI” tab, deselect the “OpenRuntime.EFI” “HFsPlus.EFI” options.

Firmware Drivers
Firmware Drivers

5. Select the “SMBIOS” tab and add the sm bios to the system model and in my case, it’s “iMacPro1,1”.

Add SMBIOS
Add SMBIOS

6. Select “Additional BootArgs” tab, and add bootargs like “-v alcid=11”.

Add bootargs
Add bootargs

7. Once every settings performed clearly click on the “Generate EFI” option to create the “EFI” file. Once the EFI generated the “EFI” folder will appear on your desktop. When the EFI created close the OC Gen X Pro application.

Generate EFI
Generate EFI

8. Now open the EFI folder copy the config.plist and USB kext from kext folder to your desktop and delete the EFI folder from the desktop.

9. When that’s done open the “OpenCore Builder”, once it opened from version select “Release”.

Release
Release

10. Select the location where you want to save the complete Builds folder, for specifying the location click on “Choose”.

Choose locations
Choose location

11. For the best location desktop is perfect, click on the “Open” option.

Open
Open

12. Once everything is cleared, click on the “Build” option to start building. Remember you must be connected to the internet to download the files from GitHub. Also, the process of building the file will take some time.

Build
Build

13. Once the file built you will see the all is done text at the end, close the OpenCore Builder.

Done

    Done
  • Now open the file from the desktop, and copy the “EFI” folder to the desktop and delete the folder and empty the trash.
  • Open the EFI folder, open the OC folder, and copy the config.plist from desktop and paste it into OC folder.
  • Open the driver folder, keep the necessary drivers and delete the rest of them. Go back open Kext folder again keep the necessary drivers and delete the rest. And also the USBKext from desktop to Kext folder.
Delete
Delete

14. Now open the ACPI folder then copy and paste the “SSD-T and SSDT-PlUF” from desktop to ACPI folder.

Copy
Copy

15. Over ahead to config.plist file and open with OpenCore Configurator

Open With OpenCore Configurator
Open With OpenCore Configurator

16. Once the OpenCore Configurator opened in the “ACPI” tab, click on the Browse option. Then select the “DSDTS and SSDTS” file and click on open.

Add
Add

17. Now go to the “Kernel” tab and remove the previous Kext.

Remove Kext
Remove Kext

18. Now click on the “Browse” option for adding the new Kext file. Select the Kext files from the EFI folder and click Open.

Add Kext
Add Kext

19. Over ahead, to the “UEFI” tab, click on the “Drivers” tab, then click on the Browse option. And add the drivers by browsing the EFI folder. After adding the driver you will see that opencancopy.EFI driver which is responsible for loading the GUI Bootloader. But it will not be activated unless you change the picker mode to external from the miscellaneous tab.

Add drivers
Add drivers

20. When the drivers added, close the “OpenCore Configurator” and click on the “Save” option.

Save
Save

Hope you enjoyed creating an EFI file for macOS Big Sur if you faced any kind of problem feel free to share with us below down comment section.

Related:

  1. How to Fix Intel HD Graphics on macOS Big Sur 11
  2. How to Fix Intel Wifi and Bluetooth on macOS Big Sur

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3 comments

fudel July 24, 2020 at 7:59 am

13. Once the file built you will see the all is done text at the end, close the OpenCore Builder.
– Now open the file from the desktop, and copy the “EFI” folder to the desktop and delete the folder and empty the trash.

WHAAAATTTT?????

– “Now open the file from the desktop” – what file? and why opening it?
– “copy the “EFI” folder to the desktop and delete the folder and empty the trash.” – Delete which folder?

The only one thing i can imagine what you you probably wanted us to do is: Open the EFI drive and backup the inclosed EFI-Folder to your desktop. After backing up the EFI folder delete this folder from the EFI drive and empty the trash.

Sorry, i am totally confused at this point.

Reply
johny July 25, 2020 at 2:37 am

Sorry, I didn’t mention the EFI file, manually you have to download the EFI file in order to create an OpenCore EFI file for your system.

Reply
johny July 25, 2020 at 2:44 am

Also, check out the EFI file download links is updated in the download links section.

Reply

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