OpenCore 0.6.0 finally booted for me under Mojave after CaseySJ posted the preparation steps about removing Hackintosh kexts. Thanks for that! Once it was booting I replaced the existing kext with IntelMausi.kext to fix the other Ethernet port. Then I copied the Inqnuam Thunderbolt DROM from my Clover EFI folder and fixed up the config.plist file. SSDT-DTPG was already there.
Now it seems that I can either have my Apollo Twin running through the Apple Thunderbolt 3 to 2 adapter OR I can have the CalDigit TB3+ working but not both. They worked simultaneously under Clover. When both are connected it looks like this:
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With this condition, the Apollo works, but anything connected to the CalDigit won't work, it only delivers power. I'm hoping this is enough information for someone to be able to point me in the right direction.
Things I've tried when the Apollo wasn't working: Tried a different Thunderbolt cable. Initialized the Apollo. Re-installed UA software. Once I changed the cables around the CalDigit stopped working and the Apollo worked fine. Since then I've generated a new DROM and spent a lot of time checking things - seems like whichever device "steals" the Thunderbolt first wins.
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I’ve been running this build since November 2019 and it has been a great experience as the first Hackintosh after a long succession of Macs. Since then I’ve been incrementally upgrading it with native NVRAM (the long, hard way), BIOS F9g, loading modified firmware to the Thunderbolt flash ROM and most recently this conversion to OpenCore 0.6.0. It feels like going back to Clover would be a step backward.
I run Mojave 10.14.6 (18G6020) due to a legacy 32 bit application for a side interest. Aside from the new and annoying temporary boot freeze caused by some interaction with the last security update and Universal Audio’s software it has been stable and reliable. I can put up with that since it positively screams compared to the last iMac and eGPU I owned, particularly with a demanding program like Davinci Resolve.