To help prevent accidental data loss, OneNote for Mac does not include a command for deleting entire notebooks. You can close any currently open notebook to remove it from your notebooks list in OneNote, but to delete a notebook and all of its contents outright, you’ll need to remove the notebook. OneNote for Mac continually syncs all of your notes with OneDrive. This lets you open, view, and edit your notebooks on all your devices so they’re always up-to-date. OneNote for Mac requires access to OneDrive using a Microsoft account. Contact Apple support by phone or chat, set up a repair, or make a Genius Bar appointment for iPhone, iPad, Mac and more.

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