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Create a Bootable USB Stick from an Older Version of macOS

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Créer une clé USB Bootable d'une ancienne version de macOS: crwdns2935265:00crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Download the version of the OS you want to install here: https://support.apple.com/en-gb/HT211683

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