How to upgrade to macOS Sonoma - Apple Support

Here's how to prepare your Mac for macOS Sonoma

Update macOS on Mac - Apple Support

macOS Sonoma is available today - Apple

Unlock your Mac with your Apple Watch - Apple Support

Facing macOS Sonoma issues? Learn how to fix them one by one

macOS Sonoma drops support for legacy Mail plug-ins

macOS Sonoma compatibility: The Macs that run macOS 14

macOS Sonoma won't install: Fixes for when a macOS update is stuck

macOS Sonoma Download Available Now

Use more than one version of macOS on a Mac - Apple Support