The disk “My Book” wasn’t ejected...
When attempting to eject my external hard drive "My Book" I am receiving the following error:
The disk “My Book” wasn’t ejected because one or more programs may be using it.
Don't know how to determine which programs / processes may be using it and would like some guidance. See the included EtreCheck report for additional reference.
MacBook Pro 13″, macOS 10.14