: Double-click the downloaded file to mount it.
Apple maintains a backend support document that links to the macOS Sierra installer via the App Store. This does not give you a raw .dmg file, but it gives you the official Install macOS Sierra.app . mac os sierra 1012dmg download free
Before you download macOS Sierra 10.12, ensure your Mac meets the system requirements: : Double-click the downloaded file to mount it
Apple provides direct links for older operating systems via their support pages. follow these steps:
To download macOS Sierra 10.12, follow these steps: