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Boot Camp Assistant Problem

When trying to start the process the BCA stops me with the message "External Storage Device attached". I've unmounted and physically disconnected everything but the mouse and the Internet but I still get this message. Any idea what is going on?

iMac 27", macOS 10.15

Posted on May 9, 2020 11:26 AM

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Question marked as Top-ranking reply

Posted on May 9, 2020 2:09 PM

Disconnect all external devices, except your BT Keyboard/Mouse/Trackpad.


Run


and retry BC Assistant.

5 replies

Boot Camp Assistant Problem

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