Can I automatically ejecting external drives when I stopped my iMac?

Every time I stop my iMac (mid-2011 with the help of El Capitan 10.11.5) and then launch later, I get messages that my external drives have not ejected correctly.

Is it possible that readers can be ejected automatically during the closed iMac?

Thank you very much.


Is what kind of readers this?  I have often in the past quarter century end Macs with disks attached and that they were all ejected correctly.

Tags: Mac OS & System Software

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