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Even if you could shim between UEFI and the macOS kernel (which is expecting to be started by iBoot) I think the problem will be the fact that Big...
It's not insurmountable, but Apple has significantly changed the way that M1 Macs boot - they are more akin to iOS and use iBoot rather than UEFI,...
I tried creating an iso from the installer media, and that doesn't show up as a bootable source either. The reason for it, as far as I can tell,...
It suggests that it does support usb booting in the GUI, but I couldn't get the USB devices to show up in the EFI shell either.