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how to clean intallreinstall mac os sierra without losing data

how to clean intall/reinstall mac os sierra without losing data Download Mac OSx High Sierra: os download link: terminal code: sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia –volume /Volumes/sierraInstall –applicationpath /Applications/Install macOS Sierra.app Related topics: clean install mac os high sierra clean install…