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: The most straightforward way is using the macOS Big Sur App Store link .
A DMG file is an Apple Disk Image file. It acts as a digital standalone disc that contains the installation files for the operating system. While everyday users update their Macs via the Software Update menu, system administrators and power users rely on DMG files for several distinct reasons:
Improved tab management, privacy reporting, and performance. Stability: Optimized for late 2013-2021 Intel Macs. Safety Warning