How to download and install macOS
Download and install current or previous versions of the Mac operating system on compatible Mac computers.
Transfer files between a Mac with Apple silicon and another Mac
On a Mac with Apple silicon, use Mac Sharing to connect to another Mac and transfer files.
Mac startup key combinations
Learn about the Mac features and tools that you can access by holding down one or more keys during startup.
Manuals, Specs, and Downloads
Manuals, technical specifications, downloads, and more for Apple software and hardware
Erase your Mac and reset it to factory settings
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.