Download and install current or previous versions of the Mac operating system on compatible Mac computers.

On a Mac with Apple silicon, use Mac Sharing to connect to another Mac and transfer files.

Manuals, technical specifications, downloads, and more for Apple software and hardware

Learn about the Mac features and tools that you can access by holding down one or more keys during startup.

Use Erase All Content and Settings to quickly and securely erase all of your settings, data, and apps, while maintaining the operating system currently installed.