macOS Big Sur (version 11) represented a seismic shift in the history of the Mac operating system. It marked the transition from macOS 10.x to version 11, introduced a brand-new visual identity, and laid the groundwork for the Apple Silicon era. Even years after its release, many users still seek to install Big Sur—whether for compatibility with specific legacy apps, to run on older hardware that struggles with newer updates, or simply for its refreshed aesthetic.