If you do manage to obtain a DMG file for macOS High Sierra (or better yet, download it directly from Apple), you can create a bootable installer on a USB drive. This can be useful for installing the operating system on multiple Macs.
Apple officially supports downloads for older OS versions through its dedicated support pages and the App Store’s "Purchased" tab. However, Apple no longer prominently lists High Sierra on the main macOS page. That means third-party websites have proliferated—some legitimate, some malicious. download macos high sierra 10.13.6 dmg mac
: It is one of the last versions to support certain 32-bit applications before Apple moved exclusively to 64-bit. Method 1: Download via the Mac App Store (Official) If you do manage to obtain a DMG
: You can often access the "hidden" High Sierra page by using a direct link from the Apple Support Download Page or macOS High Sierra on the App Store . However, Apple no longer prominently lists High Sierra