The process of obtaining and setting up macOS High Sierra on a compatible computer involves acquiring the necessary installation files and initiating the operating system’s setup procedure. This typically entails downloading a disk image file from a verified source, creating a bootable installer, and then using that installer to overwrite or upgrade the existing operating system. For example, a user might initiate this process to replace an older macOS version with High Sierra.
This process enables users to run a specific iteration of macOS, potentially accessing particular software compatibility or addressing hardware driver requirements not available in later operating systems. Furthermore, it may be necessary for maintaining older hardware functionality or for software testing in an environment that replicates older macOS configurations. Accessing this older operating system is crucial for certain legacy workflows.