Because High Sierra introduced a new file system (APFS) and security features, the installation process includes a firmware update. Your Mac may restart several times and show a black screen with an Apple logo and a progress bar for a long time (sometimes 30+ minutes).
: While searching the App Store directly may yield no results, you can use a Direct App Store Link via Safari to find the installer. macos high sierra download dmg install
: You can often find a direct link on the Apple Support page that opens the App Store directly to the High Sierra download page. Because High Sierra introduced a new file system
Apple officially hides older macOS installers in the App Store to prevent novice users from installing outdated operating systems. However, they provide a direct link that triggers the App Store download. : You can often find a direct link
However, Apple no longer prominently features this legacy OS in the Mac App Store. So, how do you get the official file? And more importantly, how do you perform a clean installation (wiping your drive and starting fresh) without running into errors?