Desperately looking for a solution to this problem. I just purchased a new imac and my G-Drive is not working well with this new computer. I get “disk not ejected properly” messages every minute or so. I have tried changing energy saver modes as suggested. I have also tried running mac disk utility and it failed.
This disk has all of my time machine backups so I would really like to get it up and running with this new imac
macOS High Sierra - 10.13.6
G-Drive with thunderbolt purchased in 2017
using USB 3.0 cable