erase install Covererase-install is a script to reinstall macOS directly from the system volume using startosinstall, a resource binary which has been built into macOS installer applications since version 10.12.4. The --eraseinstall option was added with macOS 10.13.4 for computers with an APFS system volume. The script has many options to suit a large variety of workflows, management tools and user experiences.

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