To perform a clean installation or use the installer on multiple Macs, follow these steps: How to download and install macOS - Apple Support (PH)
macOS Big Sur 11.2.1 is an operating system update released by Apple in February 2021 . While the full installer is typically distributed as a file through the Mac App Store, it can also be found as a InstallAssistant.pkg macos big sur 1121 installer dmg
macOS Big Sur 11.2.1 was a minor post-release update in Apple’s Big Sur line that focused on bug fixes and stability rather than major new features. A short, focused essay about the "macOS Big Sur 11.2.1 installer dmg" should cover what the update addressed, why users might seek the installer DMG, how installers are distributed and used, and safe practices for obtaining and using an installer image. To perform a clean installation or use the