[josteink]

I think the only difference now is that Macs use EFI boot, and not BIOS boot and hence will only boot software with a EFI-boot compatible bootloader.

Once you get past that step a Mac works exactly like a "PC". Just like a "PC" works exactly like a Mac if you fake the EFI-boot via a custom BIOS-to-EFI bootloader on a USB-stick.

[yuhong]

That was fixed with firmware updates soon after release of the first Intel Macs.