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How to extend the iMac Pro to X99 [Successful Build/Extended Guide]

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kgp

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Did all that, and no luck still.. Theres no debug, so I can't even see what is going on.. very frustrating, I'll have to erase and try with MacPro6,1 and see what happens.

You are still with the Z370G as shown in your profile? Not sure if my EFI-Folder would work with this board without modifications..

Usually performing 1.) to 3.) is sufficient to successfully boot any X99 system..
 
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You are still with the Z370G as shown in your profile? Not sure if my EFI-Folder would work with this board without modifications..

Usually performing 1.) to 3.) is sufficient to successfully boot any X99 system..
I have also a X99 system just like yours, same board, same CPU (I have quite a fleet ;)) I just discovered what was that was preventing boot.. THE BIOS!... amazingly enough, I unlocked the bios with the procedure shown above (just like I have with my X299 system according to your directions), that was the last thing I had left to replace.. Loaded the original Bios into USB, re-flash and it now works.. There must be something wrong with patching tool on fresh installs.

I could send you the Bios I made if you'd like to give it a go? I managed to use it before I formatted to adopt new iMacPro system, but with fresh install, it wouldn't boot from M.2.. So weird
 

GDS

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Somehow it looks like an EKWB product (silver logo) :)

on the page 1 you described that the Broadwell-E performance patch PMHeart needs to be changed for the X.13.6
so before the upgrade: it needs to be changed?
 

kgp

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Somehow it looks like an EKWB product (silver logo) :)


on the page 1 you described that the Broadwell-E performance patch PMHeart needs to be changed for the X.13.6
so before the upgrade: it needs to be changed?

The 10.13.6 performance patch currently does not apply again. Please stay for now with 10.13.5, if you want to remain with working OC!

I won't update my guide until the 10.3.6 OC issue is again solved. BTW.. also no OC with 10.14 PB1 and the respective performance patch for now...

BTW...

From 13th to 22nd of July, I will be on holidays and largely unavailable.... some likely important information for all of you ;)
 
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Have a great time, you deserve it ! I will try to pinpoint myself the issue with 10.13.6. I”ll post any update here :)
 
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Up and working OC on 10.13.6 on Hasswell-E with this performance path. Credits to @PMheart, @okrasit and @cfszs for finding this.

Also thank you kgb for helping us with iMacPro on x99, after porting my build to this SMBIOS it works flawlesly.

Code:
# performance fix for 10.13.6 (17G65)

# find
C1 E3 08 48 63 D3 89 D0 48 C1 EA 20 B9 99 01 00 00 0F 30 48 FF 05 79 B0 6B 00 48 83 C4 08 5B 5D C3 66 2E 0F 1F 84 00 00 00 00 00
# replace
BB 00 FF 00 00 48 63 D3 89 D0 48 C1 EA 20 B9 99 01 00 00 0F 30 48 FF 05 79 B0 6B 00 48 83 C4 08 5B 5D C3 90 90 90 90 90 90 90 90
 
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Up and working OC on 10.13.6 on Hasswell-E with this performance path. Credits to @PMheart, @okrasit and @cfszs for finding this.

Also thank you kgb for helping us with iMacPro on x99, after porting my build to this SMBIOS it works flawlesly.

Code:
# performance fix for 10.13.6 (17G65)

# find
C1 E3 08 48 63 D3 89 D0 48 C1 EA 20 B9 99 01 00 00 0F 30 48 FF 05 79 B0 6B 00 48 83 C4 08 5B 5D C3 66 2E 0F 1F 84 00 00 00 00 00
# replace
BB 00 FF 00 00 48 63 D3 89 D0 48 C1 EA 20 B9 99 01 00 00 0F 30 48 FF 05 79 B0 6B 00 48 83 C4 08 5B 5D C3 90 90 90 90 90 90 90 90
@dMatik,
what FAKECPUID have you set for Haswell-E? Same for 10.13.5 and 10.13.6?
 
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