Double-click the downloaded Apple file to extract the Install Mac OS X Lion.app into your Applications folder.
If your goal is to install OS X Lion on an old physical Mac, a bootable USB drive is the most efficient method. You will need a USB flash drive with at least 8 GB of capacity. Using macOS Disk Utility: Plug your USB drive into your Mac. mac os lion iso
If you must download a pre-made ISO from third-party archives (like the Internet Archive), always verify the file integrity by checking its MD5 or SHA-1 hash values against known clean copies. How to Convert the Official Lion DMG to ISO Double-click the downloaded Apple file to extract the


