A (Disk Image) is a common macOS format for distributing software. However, Apple no longer directly provides standalone DMG files for full macOS installers. Instead, they use an InstallAssistant.pkg or the App Store installer. 2. Official Ways to Get macOS Big Sur (No DMG needed) | Method | Description | |--------|-------------| | App Store | Direct download from Apple’s servers (appears as “Install macOS Big Sur” in your Applications folder). | | System Preferences → Software Update | If your Mac is compatible and running Catalina or earlier. | | Apple’s support page | Hidden link: apps.apple.com/us/app/macos-big-sur/id1526878132 |
1. Overview macOS Big Sur (version 11.x) was released in November 2020, introducing a major redesign, Control Center, Notification Center updates, and support for Apple M1 chips. While Apple has moved on to macOS Monterey, Ventura, Sonoma, and Sequoia, many users still seek Big Sur for compatibility with older hardware or specific software. Macos Big Sur Dmg Download