Apple–Intel architecture

[not verified in body] 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.

It is a part of the Extensible Firmware Interface (EFI) standard proposed by Intel as a substitute for the earlier PC BIOS.

"[7] Intel-based Mac computers use very similar hardware to PCs from other manufacturers that ship with Microsoft Windows or Linux operating systems.

Digital rights management in the Apple–Intel architecture is accomplished via the "Dont Steal Mac OS X.kext," sometimes referred to as DSMOS or DSMOSX, a file present in Intel-capable versions of the macOS operating system.

[citation needed] Its presence enforces a form of digital rights management, preventing macOS being installed on stock PCs.

[citation needed] The name of the kext is a reference to the macOS license conditions, using the name used for the OS at that time, which allow installation on Apple hardware only.

(C) Apple Computer, Inc." After the initial announcement of first Intel-based Mac hardware configurations, reporting a Trusted Platform Module among system components, it was believed that the TPM is responsible for handling the DRM protection.

[26] These two 32-byte keys form a human-readable ASCII string copyrighted by Apple,[27] establishing another possible line of legal defence against prospective clone makers.

VirtualBox is another piece of virtualization software originally from Innotek (now Oracle Corporation), which had a first public beta release for Mac OS X in April 2007.