Help with booting opencore big sur installer

[bob0218]

Ok thanks I'll have a read of that and wait for the new cofig

 

[Edhawk]

Ok, here is the revised /EFI/OC folder. This incorporates the Results SSDT's and config.plist patches, plus a number of other SSDT's, kexts and other X99 specific patches in the config.plist.

See if this gets you any further in the boot process.

 

[bob0218]

ok thanks ill try it now and let you know if it works

 

[bob0218]

Hi i just tried it and all im getting is an apple logo with a progress bar that isn't moving

 

[Edhawk]

No Verbose Text on the screen, or is this after the verbose text has finished?

 

[bob0218]

No there wasn't any I looked at the boot args to see if it wasn't enable but it was

 

[Edhawk]

Can you run the installer again, but when you reach the OC GUI run the ClearNVRAM and ResetNVRAM before booting the macOS installation icon.

 

[bob0218]

Ok ill try that in a bit as I have just had to pop out

 

[Edhawk]

No rush.

 

[bob0218]

Hi I tried that but still the same result

 

[Edhawk]

Sorry, that was my best go at creating an OC folder for an X99 board. I used a Clover folder that I created for another member on this site, I can't think of anything else we could try.

You may need to install Big Sur on your drive in a different system, real Mac or another hack (something newer than a Haswell would work as they tend to have functional NVRAM) and then see about transferring the drive to your X99 system. This seems to be the best option for a lot of X99 system owners who want to upgrade to Big Sur. As it usually gets them over the NVRAM failure and other boot issues.

 

[bob0218]

ok thanks for the help ill try it on my z390 system and let you know how it goes

 

[Edhawk]

The Z390 motherboards are notorious for issues with NVRAM. So much so that the OpenCore guide instructs users with this board (and others) to install a specific fix, SSDT-PMC.aml. See this link in the Dortania OC guide - https://dortania.github.io/Getting-Started-With-ACPI/Universal/nvram.html

 

[bob0218]

Hi thanks for the help I finally got it installed on my other machine and moved over and its working perfectly