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Would you like the step-by-step terminal method to create a bootable macOS ISO from an official Apple installer? That’s the safest approach.

Users searching for pre-made ISO files often land on forums, torrent sites, or unverified software repositories. The risks associated with downloading a pre-compiled "macOS Sequoia 15.5 ISO" include:

To download version 15.5, run: softwareupdate --fetch-full-installer --full-installer-version 15.5

: Use the createinstallmedia tool inside the installer app to "burn" the OS to that image.

: Use Terminal to create a sparse image of roughly 16GB.