With the change in architecture, a change in firmware became necessary. Main articles: Extensible Firmware Interface and GUID Partition Table With the change in processor architecture to x86, Macs gained the ability to boot into x86-native operating systems (such as Microsoft Windows), while Intel VT-x brought near- native virtualization with macOS as the host OS. With the change in architecture, a change in firmware became necessary Apple selected the Intel-designed Extensible Firmware Interface (EFI) as its comparable component to the Open Firmware used on its PowerPC architectures, and as the firmware-based replacement for the PC BIOS from Intel. that use Intel x86 processors, rather than the PowerPC and Motorola 68000 ('68k') series processors used in their predecessors or the ARM-based Apple silicon SoCs used in their successors. The Apple–Intel architecture, or Mactel, is an unofficial name used for Macintosh personal computers developed and manufactured by Apple Inc. ( Learn how and when to remove this template message) Please help update this article to reflect recent events or newly available information.

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