You can delete any of the pages, sections, or section groups in your notebook — or you can delete the entire notebook itself.
Make sure that you really want to get rid of them — notebook, section, and page deletions are permanent.
Important: Unlike the full-featured OneNote apps, where you can use Ctrl+Z (Windows) or ⌘+Z (Mac) to undo your last actions, deleting pages, sections, and entire notebooks (and all of the pages they contain) in OneNote for iPad and iPhone is immediate and cannot be undone.
Delete a page from a notebook section
If there’s a page that you no longer need, swipe left on the page name and tap Delete.
Caution: When you delete a page from a notebook section, all of the notes on that page, including any inserted files and attachments, will also be deleted.
Delete a section and its pages from your notebook
If there’s a section that you no longer need, swipe left on the section name and tap Delete.
Caution: When you delete a section from your notebook, all of the pages contained in that section, as well as the notes on those pages, will also be deleted.
Delete an entire notebook
To help prevent accidental data loss, Microsoft OneNote doesn't 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 file at its source.
Warning: Completing this procedure will permanently delete the entire contents of the selected notebook — including all of the sections, section groups, pages, subpages, notes, images, files, and attachments that it may contain. It cannot be undone. If your notebook has at any time been shared with other people, consider first giving the other authors advance notice that you are deleting the notebook, so that they have the opportunity to back up any important information.
When you're ready to delete an entire notebook, do the following:
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First, you need to close the notebook. In OneNote, tap the Show Notebooks button
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Tap and hold the notebook you want to delete. At the bottom of the notebook list, tap the Close Notebook
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Nest, in Safari or in any other Web browser, go to www.onedrive.com. If necessary, sign in with the same Microsoft account or organizational account where the notebook you want to delete is currently stored.
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When you have successfully signed into OneDrive, navigate to the Documents folder for your account.
Note: You might need to navigate to a different folder if the notebook was initially saved to a folder other than Documents.
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Next, In Safari or in any other Web browser, go to www.onedrive.com. If necessary, sign in with the same Microsoft account or organizational account where the notebook you want to delete is currently stored.
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When you have successfully signed into OneDrive, navigate to the Documents folder for your account.
Note: You might need to navigate to a different folder if the notebook was initially saved to a folder other than Documents.
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Move the mouse pointer over the notebook you want to delete, and then click to select the small circle that appears next to or in the upper right corner of the notebook icon.
You'll see a small check mark in the circle next to the notebook.
Click Delete on the OneDrive menu bar.
