I have an issue with my WD external drives and have a Mac Mini. I have a 1TB and a 2T. Over the span of one day, I get a number of messages from both drives. The message is, Eject “My Passport - 1TB (backup)” before disconnecting or turning it off. It does the same message with the 2TB one. I don’t disconnect or turn off either drive. They are connected all the time. Any help is greatly appreciated on a fix for this.