The Dell OptiMac Big Sur/OpenCore Thread - For 7020/9020 Optiplex Desktops

[gaumap33]

Stuck at rooting via boot-uui
Solved!

 

[AlumaFX]

Looks like you've still got the alcid=1 boot flag active so remove that and your audio and it should then work.

View attachment 499496

See boot-args under 7C436110-AB

That was the fix! Thank you!

 

[kai34]

iam having problem with bios is automatically changing to raid and offset code also changing to default.

 

[trs96]

iam having problem with bios is automatically changing to raid and offset code also changing to default.

Sounds like your CMOS battery is not retaining the settings. Did you replace the old one with a fresh battery ?

 

[kai34]

i

Sounds like your CMOS battery is not retaining the settings. Did you replace the old one with a fresh battery ?

No I didn't replace.

 

[trs96]

Affordable QHD IPS monitor by LG ​

LG 27QN600-B 27” (2560 x 1440) IPS​

https://www.amazon.com/dp/B089NZCLHW/?tag=tonymacx86com-20

Since most people will scale a 27" 4K monitor to 2560 x 1440 anyway, this makes buying a high resolution 27" monitor easier on the budget. This sells for $226 right now on Amazon.com. If you want to really enjoy Big Sur and the new GUI this is one of the better investments you can make. You can even run it on HD4600 onboard graphics via the preferred DP to DP connection.

The primary reason most of us buy these refurbished Dell machines is because they are so affordable. You can use the money you saved on the build to get a great looking monitor like this. If your graphics card is good enough to game at 1440p that makes these look even more attractive to add to your OptiMac system.

 

[danygtv]

Hi @ all
Does anyone have a working configuration for the DELL 9020m?

I would be very thankful!

My System:
9020 Micro
i7 4785T
16GB Ram
512GB SSD

 

[trs96]

Does anyone have a working configuration for the DELL 9020m?

Have you tried going through the OC guide by Dortania yet ? What from this guide have you tried so far ?
Note that the CFG unlock method does not work for the M (micro) motherboard. That's why I'm keeping
this thread focused on just the USFF, SFF and MT models for consistency and to prevent confusion in readers.

For your Micro version you'll want to try AppleALC layout-id of 27 and SMBIOS iMac 14,4

As far as someone posting a completed EFI folder, I don't encourage that as it prevents
people from learning the important things they must know to be a hackintosh owner.
Other than that it generally doesn't work well as everyone has different requirements
for their specific usage scenario.

It's probably best to follow the general guidelines of this thread:

Dell 7020 - Using only onboard HD4600 GPU - Build Files and Overview for the experienced. 4k ready.

This is a spinoff thread from trs96's detailed build on the Dell 7020, The 4K Dell OptiMac - Core i7-4790 - AMD Radeon RX 570 - LG 4K 27" IPS Monitor, the difference being that this has has been written to setup a minimal machine with no external graphics. Trs96's guide is comprehensive...

www.tonymacx86.com

Of course you'll need to generate an OC EFI folder. Use the app by Pavo that I've linked to in my guide.

Releases · Pavo-IM/OC-Gen-X

OpenCore Config Generator. Contribute to Pavo-IM/OC-Gen-X development by creating an account on GitHub.

github.com

 

[mouz.sk1ll]

H I have a problem with my Optiplex 9020 usff only the USB 2.0 ports in the back work. If I activate USB 3.0 in the BIOS then MacOS doesn’t start up anymore

 

[trs96]

H I have a problem with my Optiplex 9020 usff only the USB 2.0 ports in the back work. If I activate USB 3.0 in the BIOS then MacOS doesn’t start up anymore

First you'll need to add your Dell hardware to your signature or your main hardware profile. Your choice. Include the CPU and graphics you have. For motherboard, simply put in Dell 9020 USFF.