@v10x - Sorry, I am not familiar with setting up OSX, google around about that error and maybe you will find answer. If it's some BIOS setting needs changes, and you can't find it, let me know.
Did you disable Vt-d? I think you have to do that, but I guess you probably already know about the usual things

What is the exact error you get, and I will look around in google too, maybe help you find a solution?

* Edit - maybe something here helps?
https://sourceforge.net/p/cloverefiboot/...limit=25&page=7
https://www.insanelymac.com/forum/topic/...oryfix/?page=19 (See also page one)

@Lost_N_BIOS I was able to reduce the stolen memory footprint by disabling not needed features in BIOS! Regarding the CFG Lock, the switch seems not to be effective. When I disable it, I can still see it's locked when I query the CPU registers:

MSR_PMG_CST_CONFIG_CONTROL........(0xE2) : 0x8400
------------------------------------------
- I/O MWAIT Redirection Enable......... : 1 (enabled, IO read of MSR(0xE4) mapped to MWAIT)
- CFG Lock............................. : 1 (MSR locked until next reset)

Of course I already tried to reboot or do a complete power cycle multiple times, but it seems it's not taking effect. I wonder if this firmware has a bug, or if there is another flag somewhere else that locks this?

@v10x - yes, there is probably 2-3 other modules that may need patched
Please wait, I will do for you tonight

Awesome, thank you!!

@v10x - http://s000.tinyupload.com/index.php?fil...036917923872187

OK, have to run, be back tonight! Hopefully all is OK with this

@Lost_N_BIOS Not sure how you made it happen, but it worked! I finally have unlocked MSR E02, this is awesome :)

@v10x - great to hear
That edit was done two ways, one module edited with UEFITool and two others directly hex edited on the BIOS itself (due to edits being in PEI / TE module and rebuild on those areas often causes error due to rebasing)
01359D99-9446-456D-ADA4-50A711C03ADA - CPUInitPEI >>> BE0080000023CE0B -> BE0000000023CE0B << Direct hex @ 0xEE971Ch
3FFCAE95-23CF-4967-94F5-16352F68E43B - PpmInitialize >>> 742CB9E2000000 -> 752CB9E2000000 << Edit with UEFITool, extract PE32 body edit >> @ 0x2B20h
299D6F8B-2EC9-4E40-9EC6-DDAA7EBF5FD9 - SiInit >> 81E10080000033C1 -> 9090909090909090 << Direct Hex @ 0xDC50C9h