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Ventura P8Z68-V installation failed


MarcomiX
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good morning guys
I have an ASUS p8z68-v 16gb ram RX560 Ati Readeon video card with I7 3 generation IVY Bridge which is working great with opencore 0.8.6. and the latest Monterey version but I can't update or do a fresh install of ventura
Can you give me a hand?
Thank you
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processore 3,41 GHz Intel Core i7 quad-core 3770

memory 16 GB 1333 MHz DDR3

scheda grafica Radeon RX 560 2 GB

wifi Tipo di scheda: AirPort Extreme 

disco Samsung SSD 850 EVO 250GB

MB asus p8z68-v

 

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As @Slice said, Ventura requires a CPU with AVX2.0 instruction set, which Ivy Bridge lacks; therefore lost native support in Ventura, however it is possible to run Ventura on your system with help of CryptexFixup - this Lilu extension allows for Ventura to be installed on CPUs lacking AVX2.0 instruction set.

Edited by aben
OCLP not required for this use-case
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perfect... I put the extension in the opencore efi folder but it still crashes during installation, I think a new configuration is needed.. is there a preconfigured efi?

 

@MarcomiX CryptexFixup.kext is missing from your config.plist under Kernel, without which the kext will not load. Also, ensure you update all Acidanthera kexts to latest releases: Lilu, VirtualSMC and WhateverGreen. Would also suggest to try disabling IntelMausi.kext until installation is complete.

Edited by aben
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AMD Polaris cards are natively supported in Ventura but will lose acceleration when paired with a CPU that lacks AVX2.0 instruction-set; to restore support you will require root patches from OpenCore Legacy Patcher v0.5.0 and above. Get the latest release here: https://github.com/dortania/OpenCore-Legacy-Patcher/releases/tag/0.5.2
 

Basic steps:

  1. Move downloaded OpenCore Legacy Patcher.app to Applications folder and open GUI from there.
  2. Prepare a fully formatted external drive with capacity of minimum 20 GB for Ventura install media. The installer will be downloaded and created by OCLP app (use "Create macOS Installer" option)
  3. Click "Install OpenCore" option and choose same external drive (which is now the bootable installer media created by OCLP) - this will install OpenCore bootloader to the EFI partition of the bootable drive however this OpenCore install is configured mainly for real Macs and will probably not boot on your system; for this you will need to carefully adjust the OC config to better suit your hardware (ACPI, Drivers, Kernel, PlatformInfo etc..)
  4. Reboot and choose "BOOT EFI" entry at picker -> choose Install macOS Ventura and proceed normally to clean install Ventura to preferred drive/volume.

 

Alternatively, you can also try installing root patches directly from OpenCore Legacy Patcher app after disabling SIP and AMFI.

Edited by aben
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@MarcomiX Hi, please try these steps:

  1. Clean-install Monterey first.
  2. Add CryptexFixup.kext and boot arg: -amd_no_dgpu_accel
  3. Perform upgrade to Ventura via System Settings or Recovery Environment of Ventura install media.
  4. Ensure SIP is Disabled (check csr-active-config)
  5. Ensure SecureBootModel is set to Disabled. (in config.plist)
  6. Run root patches via OCLP app in Ventura.
  7. Remove boot arg: -amd_no_dgpu_accel and reboot.
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