OPTIPLEX 3050 MICRO - BIG SUR

(Please read this guide even if you don't have this PC, i solved some problems that might happen in total different configurations).

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English is not my mother language, i'm sorry if there will be some errors. Thanks!

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OPTIPLEX 3050 - BIG SUR

Hello guys! I'm here to describe all the processes that led me to the successful installation of macOS Big Sur 11.4 on an Dell Optiplex 3050 Micro with OpenCore 0.7.1. I hope that i help somebody.

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I ATTACHED MY EFI FOLDER AT THE END OF THE POST FOR FURTHER HELP, BUT IT'S RECOMMENDED TO CREATE YOUR OWN EFI.

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Before we start i have to mention what it works and not, so...

• WORKING:
  • Ethernet
  • Audio Speaker + Headphones (only audio, i didn't test the microphone) - [Explained later]
  • Display Port + HDMI - [Explained later]
  • USB
• NOT WORKING:
  • Sleep Mode
  • I don't have a wifi/bluetooth card installed but i think i will have in the future (i will update this post), but probably it works (depends on the card)

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OK SO NOW, LET'S START!

PC SPECIFICATION:

• MODEL - DELL OPTIPLEX 3050 MICRO
• CPU - Intel Core i5 7500T
• iGPU - UHD 630
• RAM - 4GB DDR4 2400 Mhz
• SSD - KINGSTON 120GB

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BIOS REQUIREMENTS:

• Make sure that the BIOS is the lastet version. (Here the download page)
• BOOT LIST OPTION - UEFI
• SATA OPERATION - AHCI
• SECURE BOOT - Disable
• I disabled "Wake on Lan" but if you want you can keep it enabled
• FASTBOOT - Thorough
• EXTEND BIOS POST TIME - 0 seconds (It only make the boot faster)
• VIRTUALIZATION - Enable
• VT for DIRECT I/O - Enable

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INSTALLATION:

For the installation i followed the steps in the OpenCore Install Guide and i selected the configuration for Kaby Lake.

All the procedure went ok.

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POST INSTALLATION:

I found some problems during the post installation check, i will put between parentesis the solution post that i made.

• PROBLEMS:
  • Strange / Inverted screen colors - [STRANGE COLORS SOLUTION POST]
  • Audio didn't work - [AUDIO SOLUTION POST]
  • Pink / Magenta screen color when connecting HDMI cable - [PINK SCREEN SOLUTION POST]

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After the fixes i wanted to do some minor cosmetic modification

• COSMETICS AND OTHER:
  • I removed the picker (the screen that appears every time where you have to select the macOS and then it boot up) by disabling the "Show Picker" that is under "Misc" -> "Boot". I also enabled "PoolAppleHotKeys" for security reason.

DISABLE PICKER

• I also removed the log file that creates every time that you launch macOS. In "Misc" -> "Debug" by setting to zero "Display Level" and "Target".

DISABLE LOG FILE

• I suggest you to do the USB MAPPING, but my configuration works normally even without doing it.

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EFI FOLDER (I removed the PLATFORMINFO paraemeters for security reasons).

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That's all! I hope i help somebody. If you have some questions or something else to ask i'm here to answer. Thanks!