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This tutorial for installing macOS Monterey Developer Beta has been adapted for Proxmox from Kholia’s OSX-KVM project and Leoyzen’s OpenCore configuration for KVM. You can get the full sourcecode of my OpenCore release on my GitHub here.

Requirements

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Since Monterey is still in closed Developer Beta, you need to be an Apple Developer and have access to a Mac (or Mac VM) to download it. If you don’t have access to that, maybe you’d like to try my Big Sur tutorial instead while you wait for the public release.

Your Proxmox host computer’s CPU must support SSE 4.2, so for Intel your CPU must be at least as new as Nehalem, which was the first CPU generation to bear the “Core” i5/i7 branding. Older CPUs will cause Illegal Instruction crashes when apps/extensions attempt to use these missing instructions.

Modern AMD CPUs also support SSE 4.2 and will work with this guide.

Support ht201372Continue reading Installing macOS 12 “Monterey” Developer Beta on Proxmox 6

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Most modern AMD GPUs suffer from the AMD Reset Bug: The card cannot be reset properly, so it can only be used once per host power-on. The second time the card is tried to be used Linux will attempt to reset it and fail, causing the VM launch to fail, or the guest, host or both to hang. According to my knowledge and the official instructions I can find you press Command-R during boot and install via Internet, no USB installer required and no script. Thank you so much! The script is more the line of code to copy the macos into a USB via the terminal. But I did the internet recovery and it worked.