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If you can’t eject a disk on Mac because an app is using it

You may not be able to eject a disk from your Mac if one or more apps are using it. In some cases, a warning message may identify the app that is using the disk. You can also press and hold the Command key and press Tab to see which apps are open, then switch to a different app.

Quit the apps that are using the disk, then try to eject it again.
If you can’t quit an app, close the documents that are on the disk you want to eject, then try to eject the disk again.

See alsoSolve problems with a disk using Disk Utility on Mac Find out how to service or repair your Mac

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