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

[alexmenn]

Hi @kgp !!
I have problems with OC. My system and OC was perfect and working in 4.2ghz until update to 10.13.4. I copy your full efi folder (I just changed my mac pro 6 serial number). I do the following:
-Loaded optimized defaults and configure the bios with the guide OC settings
-Do all steps of E.6) Xnu CPU Power Management (XCPM) Configuration

• SSDT, vectors, terminal commands are OK, even the info of AppleIntelInfo.kext (attached)

After this, my system can't get frequencies up to 3.7ghz, I don't know why...

Here you are all files, maybe you can help me.

Btw, I have a full backup of my 10.3.3 system and if I boot it, the oc is OK at 4.2... So weird!

 

[kgp]

Hi @kgp !!
I have problems with OC. My system and OC was perfect and working in 4.2ghz until update to 10.13.4. I copy your full efi folder (I just changed my mac pro 6 serial number). I do the following:
-Loaded optimized defaults and configure the bios with the guide OC settings
-Do all steps of E.6) Xnu CPU Power Management (XCPM) Configuration

• SSDT, vectors, terminal commands are OK, even the info of AppleIntelInfo.kext (attached)

After this, my system can't get frequencies up to 3.7ghz, I don't know why...

Here you are all files, maybe you can help me.

Btw, I have a full backup of my 10.3.3 system and if I boot it, the oc is OK at 4.2... So weird!

Nothing new.. well known Broadwell-E OC problem under 10.13.4. Solution:
None

 

[alexmenn]

Oh, then it's a problem for everyone, not just mine!! Holy sh... Do you have the same problem with your 6950x @kgp ?

 

[kgp]

Oh, then it's a problem for everyone, not just mine!! Holy sh... Do you have the same problem with your 6950x @kgp ?

Yup

 

[alexmenn]

Oh, crap. If you fix it, please, tell me Maybe you can add this problem in your guide, for the rest of people with broadwell cpu! @kgp

 

[MuhammedHamed]

Hey Kgp
Thanks for all your time and effort making this amazing guide!
AptioMemoryFix.efi worked nicely for me.. Not a single allocation error since I started using it.
The old one OsxAptioFix2Drv-free2000.efi caused endless problems with my baord MSI X99s Mpower
Now with your solution it is 100% stable.

 

[ReptoxX]

First of all, very nice Tutorial, you made me try it once more with High Sierra.
Unfortunatly i am currently encounter an Problem where clover doesnt show my usb stick, anyone got suggestions for that issue?

So booting in clover is not that problem, but in there, there is no macOS Installer drive, i can only choose windows.


Regards,
ReptoxX

 

[MuhammedHamed]

First of all, very nice Tutorial, you made me try it once more with High Sierra.
Unfortunatly i am currently encounter an Problem where clover doesnt show my usb stick, anyone got suggestions for that issue?

So booting in clover is not that problem, but in there, there is no macOS Installer drive, i can only choose windows.


Regards,
ReptoxX

Same happened here.. It doesn't show the installer
What I did is that I used Unibeast like Tonymac's guide with default Bios settings. Just use KGP's aptiomemoryfix file in driver64efi folder and delete aptiomemoryfixdrv.efi
, then after I'm in High Sierra, I followed along with his guide. Most of his instructions worked for me and I got it fully working!
I have MSI X99s Mpower and Core i7 5820k ,so this should prabably work for you
If you want my efi folder I can upload it for you

 

[ReptoxX]

Same happened here.. It doesn't show the installer
What I did is that I used Unibeast like Tonymac's guide with default Bios settings. Just use KGP's aptiomemoryfix file in driver64efi folder and delete aptiomemoryfixdrv.efi
, then after I'm in High Sierra, I followed along with his guide. Most of his instructions worked for me and I got it fully working!
I have MSI X99s Mpower and Core i7 5820k ,so this should prabably work for you
If you want my efi folder I can upload it for you

Thank you for this Information, i will try it later today and will Update how its going

 

[kgp]

Thank you for this Information, i will try it later today and will Update how its going

Try to apply Section D.3) of https://www.tonymacx86.com/threads/how-to-build-your-own-imac-pro-successful-build-extended-guide.229353/ . Just keep in mind that under 4.) you have to copy your SMBIOS Mac Pro EFI-Folder.

Good luck,

KGP