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SMBios 19.x - iMacs 2019

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Z390 is a completely different beast. My EFI folder will most probably need modification to work right with Z390.

I picked up a Z390 motherboard, played with it for 12 straight hours, put it back in the box, and tossed it to the back of my closet. At least on the Z390 motherboard that I have (Gigabyte Z390 M Gaming), it was a PITA to get macOS booted and there were some really strange BIOS behavior. Nowhere near as good as my Asus Z370 motherboard for hackintoshing.
For the most part I'm solid with the Z390. I followed @CaseySJ instructions with a few minor deviations and I'm golden. The only thing I can't solve is the damn VT-d/dart=0 problem with I have to have. Probably OT but I'm going off on bunny trails thinking that my GPU config may have something to do with my woes.
 
For the most part I'm solid with the Z390. I followed @CaseySJ instructions with a few minor deviations and I'm golden. The only thing I can't solve is the damn VT-d/dart=0 problem with I have to have. Probably OT but I'm going off on bunny trails thinking that my GPU config may have something to do with my woes.
Some of us are waiting with bated breath to see whether the procedure linked by zoomlenz will work!
 
Some of us are waiting with bated breath to see whether the procedure linked by zoomlenz will work!
Oh sure, wait for me while I am miles away from my Hackintosh (or even my laptop with a VPN back home).

Not sure if an unlocked MSR 0xE2 has anything to do with VT-d working. I will say that I have CPU-Type set at 0x1009. Will have to see if behavior is the same when it’s set at 0x1005 (per DexterOX, above)
 
For the most part I'm solid with the Z390. I followed @CaseySJ instructions with a few minor deviations and I'm golden. The only thing I can't solve is the damn VT-d/dart=0 problem with I have to have. Probably OT but I'm going off on bunny trails thinking that my GPU config may have something to do with my woes.

I feel that if/when Z390 gets native NVRAM support, things will improve drastically, at least with my motherboard... So, I will leave my Z390 in the closet until there are updated tools, kexts, etc.

On my Z370, I have had VT-x and VT-d enabled for a very long time. I know that macOS doesn't have support for VT-d, but other operating systems do.
 
Oh sure, wait for me while I am miles away from my Hackintosh (or even my laptop with a VPN back home).

Not sure if an unlocked MSR 0xE2 has anything to do with VT-d working. I will say that I have CPU-Type set at 0x1009. Will have to see if behavior is the same when it’s set at 0x1005 (per DexterOX, above)
We're waiting for @luckyal. It needs to be tried on the Designare Z390 (which has a locked MSR 0xE2).
 
Oh sure, wait for me while I am miles away from my Hackintosh (or even my laptop with a VPN back home).

Not sure if an unlocked MSR 0xE2 has anything to do with VT-d working. I will say that I have CPU-Type set at 0x1009. Will have to see if behavior is the same when it’s set at 0x1005 (per DexterOX, above)
Out of curiosity, are you using AptioMemoryFix-64.efi or...?
 
We're waiting for @luckyal. It needs to be tried on the Designare Z390 (which has a locked MSR 0xE2).

Changing a hidden BIOS setting isn't as scary or difficult as it may seem. I recently did it on my laptop to change DVMT Pre-Alloc. You can see this post for reference. I included lots of screenshots to try and make it easier to understand.
 
Changing a hidden BIOS setting isn't as scary or difficult as it may seem. I recently did it on my laptop to change DVMT Pre-Alloc. You can see this post for reference. I included lots of screenshots to try and make it easier to understand.
Now that's more like it!
 
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