Hello there,

I have successfully installed MacOS Catalina 10.15.4 on my OptiPlex 7040 Micro.

You can find my EFI/Config folder in this repository.

Bootloader: OpenCore 0.6.3 /0.6.7

My Hardware

Intel® Core i5 6500T

RAM: 8 GB

GPU: iGPU HD Graphics 530

Wifi/BT: on Board

What works so far

Tested with macOS Catalina 10.15.6 and macOS Big Sur

Graphics: IGPU.

Wifi,Bluetooth via on Board WIFI-Card.

Audio: Working by hisself.

USB Working

Ethernet

iCloud

Application: VM-Fusion, Microsoft Teams, Citrix, WhatsAPP, Telegram,

Games like : CS:GO, MineCraft.

Sleep/Wake

Shutdown

Restart

Installation

Create an MacOS Catalina 10.15.6 USB-Installer FlashDrive. Do this on a real Mac.

Follow this Guide and Download Method: -> https://github.com/corpnewt/gibMacOS <-

Plugin USB-Drive with at least 16GB. My installation needed 8.30 GB.

The following assumes your USB stick is called "USB_NAME" Normality is "MyVolume".

Check that "USB_NAME"/"MyVolume" is partitioned with GUID.

Open the terminal and enter this command to create the installer (Replace "USB_NAME"/"MyVolume" with your USB name. In this case Untitled.

sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume

At the end your USB should be named "Install macOS Catalina".

config.plist

if you use my plist, don’t forget to change the serial number. Change the NEW_HERE accordingly with your serial number.

use this tool to genereate one. -> https://github.com/corpnewt/GenSMBIOS <-

Bios Settings

Skip steps with setting you can’t find in your BIOS

----> Disable <-----

Fast Boot

Secure Boot

Serial/COM Port

Parallel Port

VT-d (can be enabled if you set DisableIoMapper to YES)

CSM

Thunderbolt(For initial install, as Thunderbolt can cause issues if not setup correctly)

Intel SGX

Intel Platform Trust

CFG Lock (MSR 0xE2 write protection)(This must be off, if you can't find the option then enable AppleXcpmCfgLock under Kernel -> Quirks. Your hack will not boot with CFG-Lock enabled)

----> Enable <----

VT-x

Above 4G decoding

2020+ BIOS Notes: When enabling Above4G, Resizable BAR Support may become an available on some Z490 and newer motherboards. Please ensure this is Disabled instead of set to Auto.

Hyper-Threading

Execute Disable Bit

EHCI/XHCI Hand-off

OS type: Windows 8.1/10 UEFI Mode

DVMT Pre-Allocated(iGPU Memory): 64MB

SATA Mode: AHCI

Discord

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Thanks to:

https://github.com/corpnewt