Visit the official Apple Support Download Page for older macOS versions.
: If you plan to perform a clean install, you will need a USB flash drive with at least 8GB to 16GB of capacity. Creating a Bootable USB download macos sierra 1012 dmg file install
to format your hard drive (Mac OS Extended Journaled) if doing a clean install. Install macOS and follow the on-screen instructions. hardware compatibility list for macOS Sierra to ensure your Mac can run it? Visit the official Apple Support Download Page for
: Always ensure you're running the latest version of macOS compatible with your hardware for the best experience and to ensure you have the latest security patches. Install macOS and follow the on-screen instructions
Inside the mounted image, double-click the .pkg file (often named InstallOS.pkg ).
Before we proceed, a mandatory note: However, distributing modified DMG files is illegal. Always verify that your download comes from a credible source and matches Apple’s official checksums.
If you need to install Sierra on a different Mac or perform a clean wipe, you can create a bootable drive using the Connect a USB drive and rename it to Open Terminal and enter the following command: