Open the .pkg file inside the disk image. This will install an app named "Install Mac OS X Lion" into your Applications folder.
Apple officially offers the installer as a free download for older machines that cannot run newer versions of macOS . While it was originally a paid upgrade, Apple made it free in June 2021 to support legacy hardware. Direct Download Link Mac OS X Lion 10.7.5 Free Download
This installer is with any Mac that originally shipped with Mac OS X Mountain Lion (10.8) or later. If your Mac is running a very old version like Tiger (10.4) or Leopard (10.5), you must first upgrade to Snow Leopard (10.6) before you can install Lion. Open the
Open the "Install Mac OS X Lion" app from your Applications folder and follow the on-screen instructions. Important Compatibility Note While it was originally a paid upgrade, Apple