This repository contains my personal EFI configuration for the fantastic Dell Optiplex 7050 Micro.

The current version installed is Big Sur 11.4 (20F71) with OpenCore 0.7.0. Catalina was installed prior to Big Sur and it worked perfectly.

I use Macmini8,1 as my SMBIOS. iMac18,1 is also a good alternative if you wish to use it on a normal size Optiplex 7050 (SFF). Make sure to refer to the Vanilla guide if you are doing so for minor tweaks.

This was setup using the latest Dell BIOS at the time: 1.14.0. I have successfully updated to 1.15.1 and then 1.15.2 after the fact with no issues (via Windows or the built in BIOS Update Utility).

This has mostly been created with the help of the Vanilla Hackintosh Guide by Dortania and my own personal experience.

MAKE SURE YOU ADD YOUR SYSTEM SERIAL NUMBER, SYSTEM UUID, MLB AND ROM IN PLATFORMINFO BEFORE BOOTING!

You may also need to remove the AirportBrcmFixup.kext, BrcmBluetoothInjector.kext, BrcmFirmwareData.kext and BrcmPatchRAM3.kext if you are not using a Dell WiFi card or any WiFi at all. Double/triple check everything to make sure, its a relatively light setup, but better safe than sorry!

• Intel i7-7700 CPU (Not the T version, the full desktop 65W version)
• 16GB RAM DDR4 Samsung 2666 MHz, but running at 2400 MHz, because Intel limits the speed
• Intel HD Graphics 630 1536 MB
• Sabrent Rocket 512GB in the NVMe slot
• Samsung 860 QVO 1TB in the SATA slot
• Dell DW1560 802.11ac WiFi + Bluetooth 4.0 LE
• Intel I219-LM Gigabit Ethernet
• Integrated speaker at the front, works perfectly with alcid=11
• 1 Displayport 1.2
• 1 HDMI 1.4
• 1 addon Displayport port, works in Windows, doesn't work in macOS, came with the specific Optiplex I bought
• 1 USB-C Port and 1 USB-A port at the front
• 1 headphone jack and 1 microphone port at the front
• 4 USB-A ports at the back
• 130 watt Dell power supply

• APFS
• CPU power management
• GPU acceleration
• Video encoder/decoder hardware
• All USB ports at their max speed (manually mapped)
• Gigabit Ethernet
• Secure Boot
• WiFi and Bluetooth (I use DW1560, but the included Intel chips may work with OpenIntelWireless)
• Location Services
• Onboard Audio + Integrated Speaker at the front
• iMessage (set your Serial Number, UUID and MLB correctly)
• All iCloud Services
• App Store
• FaceTime
• Handoff
• Unlock with Apple Watch
• AirDrop
• AirPlay
• Continuity
• DRM:
  • iTunes Movies (FairPlay 1)
  • Netflix (FairPlay 2/3)
  • Amazon Prime (FairPlay 2/3)
  • Apple TV+ (FairPlay 4)
• NVRAM
• FileVault
• Dell Sensors (Fans/Temperature)
• Built in Displayport 1.4 and HDMI 1.2
• TRIM working on Sabrent NVMe
• TRIM enabled for SATA SSD with sudo trimforce enable
• Sidecar
• Various sharing functions like Content Caching (very useful if you have lots of Apple devices)
• Time Machine
• Seamless software updates

• Sleep/Wake (I haven't tested, but I don't think it does).
• Booting up without a monitor (or dummy Displayport). This takes a much longer time to boot and the system is very laggy if there is no monitor plugged in. Seems like the iGPU is not activated, which makes everything lag. Disabling WiFi improves things, but that's not ideal as I am running this in headless mode (I connect via VNC from time to time). I had to buy a dummy Displayport which activates the iGPU and performs normally with it. Let me know if there is a way to do it without the dummy plug or maybe the actual Macmini can't run headless either. This could also be fixed with an iMac SMBIOS, I haven't tried it.

Only things you need to set manually is the System Serial Number, System UUID, MLB and ROM. I have set them as {CHANGE ME} and OpenCore will complain if you do not set them correctly. You can get the first three created with GenSMBIOS. The ROM part can be your Ethernet or WiFi MAC Address such as E4 85 G6 M8 H9 2Q, for example. Refer to the Vanilla Hackintosh Guide by Dortania if you need more help.

• Update to the latest BIOS if you can.
• Once on the latest BIOS, reset it defaults (maybe even go as far as taking the CMOS battery out a few minutes to hard reset).
• Make sure CFG Lock is Disabled. Alternatively, enable AppleCpuPmCfgLock and AppleXcpmCfgLock in Kernel, however, its better for performance to disable CFG Lock with the UEFI Variables below. You can also use the CFG Lock tool included to find the bit and flip it between Enabled and Disabled.
• Avoid Samsung PM drives as they did not let me go past the installer, it would always crash (may be fixed with NVMEFix.kext, I just bought a Sabrent SSD instead).
• For Big Sur, if you're using Dell Wireless 1820A or something similar, make sure to modify your config according to the "Please pay attention" section, otherwise it will take forever to boot into the installer.

The entire BIOS settings can be found here

For CFG Lock, you can either do the manual way with UEFIModify (which is just a modified GRUB for Dell systems(perhaps it works on others too)) or you can use the automated CFGUnlock in the boot picker and follow instructions. As of OpenCore 0.6.8, ControlMsrE2 is included and may be used to unlock CFG Lock for systems which have no easy way of doing so.

The manual way is to boot into OpenCore, choose UEFIModify, type in setup_var, the offset and the required value. An example screenshot is below:

The more automatic way is to boot into OpenCore, choose CFGUnlock and follow the instructions. An example screenshot is below:

Make sure to restart after any changes, they should apply. You can check if CFG is unlocked by using VerifyMsrE2 which is included with OpenCore tools. An example screenshot is below:

I have swapped from DW1820A to the DW1560 recently to see if Airdrop/Continuity/Handoff would work better, but I'm just not sure on both of these cards anymore. It seems itlwm is making very good progress and you're better off with an Intel card these days. Still, I'll keep it in there since I am connected via Ethernet anyway.

I use exelban Stats to monitor everything about my system in the menu bar: https://github.com/exelban/stats

This has been a great Plex Server throughout its use, very good Minecraft server too and have Wireguard VPN Server setup with this guide.

As for the Bi-directional PROCHOT (BDPROCHOT), I've encountered this several times at work with our Dell machines and finally figured out how to stop it or at least suppress it. What happens is either a sensor dies, misinforms the BIOS or just the power supply is crappy and sends signals all over the place which in turn locks your CPU to a low power state. Sometimes its 0.79GHz, sometimes a little bit higher or lower, but the result is an EXTREMELY slow system. The computer thinks its essentially on fire and limits everything it can to save itself. However, in reality, the cooling is more than enough and no overheating is ocurring. I've had to replace a few motherboards under warranty to fix this issue before, but I found out that you don't need to do any of that, you just reset the variables hidden in the BIOS as shown above. Rambling aside, I will be making a tutorial on how to find the variable and turn it off and get your CPU speed back up to normal in the future.