Download a macOS installer using the App Store or your browser

 Download a macOS installer using the App Store or your browser

When you use these methods instead of Software Update, your Mac might need more storage space to download macOS and complete the installation.
  

Ventura 13

Monterey 12

Big Sur 11

Catalina 10.15

Mojave 10.14

High Sierra 10.13

1. Click the link to open the App Store page for that macOS. 
2. In the App Store, click the Get button to begin downloading the macOS installer.
3. After downloading to your Applications folder, the installer opens automatically. Follow the onscreen instructions to install macOS.

 

Sierra 10.12

El Capitan 10.11

Yosemite 10.10

Mountain Lion 10.8

Lion 10.7

1. Click the link to download a disk image (.dmg) file for that macOS.
2. Double-click the .dmg file to open it and see the .pkg file within.
3. Double-click the .pkg file, then follow the onscreen instructions. This installs the macOS installer into your Applications folder.
4. Open your Applications folder and double-click  the macOS installer, named Install [Version Name]. Follow the onscreen instructions to install macOS.