Click and follow the on-screen instructions to complete the upgrade. Option B: Create a Bootable USB (Clean Install) How do I install MacOS Sierra DMG to Bootable USB?
Once you have the bootable USB, follow these steps to install: into the Mac you want to install on. download macos sierra 1012 dmg file install
If your Mac is already running a compatible OS, you can try the macOS Sierra App Store link . 2. Prepare the Installer Once the InstallOS.dmg file has finished downloading: Mount the DMG: Double-click the .dmg file to open it. Click and follow the on-screen instructions to complete
Select (or Reinstall macOS ) from the main utilities menu. Click Continue and agree to the software license terms. If your Mac is already running a compatible
To safely download the macOS Sierra 10.12 DMG file and install it, you must use , extract the installer application, and deploy it onto a compatible Mac hardware profile . Attempting to download this operating system from unverified third-party repositories poses substantial malware and security risks.
If you'd like to narrow down these steps for your setup, let me know: