Download Mac Dmg -

Click the download link from your browser. Safari typically saves these to the Downloads folder, which you can access via the Dock or Finder.

If you are looking to download older operating systems as .dmg files, you can use official links to create bootable USB drives: OS X El Capitan 10.11 OS X Yosemite 10.10 Download MAC dmg

If the app won't open, go to System Settings > Privacy & Security and click "Open Anyway". Click the download link from your browser

If you get a "damaged" error, try to download the file again, or try a different browser like Firefox to ensure the download wasn't corrupted. try to download the file again

Double-click the downloaded .dmg file to "mount" it. It will act like a virtual drive on your desktop or in your Finder sidebar.