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I'm currently running a Linux VM on my Mac using VirtualBox. I'd like to set up another nested VM inside my Linux VM, also using VirtualBox. However, the option to Enable Nested VT-x /AMD-V is greyed out. What's happening?

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    What is your Mac and which macOS is installed on it?
    – Alper
    Commented Nov 18, 2023 at 0:21

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VirtualBox does not support nested virtualization on macOS 13+; VirtualBox relied on a type of kext that's no longer supported on later versions of macOS for nested virtualization. Apple now requires that hypervisors use their virtualization framework.

You can either use VMware Fusion, which definitely supports it, or QEMU/UTM, which may or may not work.

Keep in mind that nested virtualization is not supported by Apple Silicon chips; you'll need an x86 chip to use nested virtualization.

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  • Thank you so much, the nested virtualization is run with VMware Fusion when I check on hypervisor.
    – Amaal
    Commented Nov 18, 2023 at 9:31

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