I have a 2013 Mac Pro. This machine is used exclusively in my recording studio. OS 10.14.6. Sometimes when I try to shut the computer down it sticks on the black screen with spinning gray wheel and will never shutdown, even if left over night. I have to hold the power button to force a shutdown. The issue seems to be that the external hard drives do not unmount.
I can tell when this is going to happen because when I click "ShutDown" the two front panel lights on my thunderbolt G Drives do not do the typical FLASH. They simply stay static. If I cancel the shutdown and go to disk utility and try to unmount the drives they won't unmount. Usually when this is occurring Disk Utility gets stuck on the Loading Volumes step or simply won't open at all. Dragging to trash doesn't do anything either. Today I have a third drive (Crucial SSD USB) connected and it won't unmount either.
Where do I begin?
I can tell when this is going to happen because when I click "ShutDown" the two front panel lights on my thunderbolt G Drives do not do the typical FLASH. They simply stay static. If I cancel the shutdown and go to disk utility and try to unmount the drives they won't unmount. Usually when this is occurring Disk Utility gets stuck on the Loading Volumes step or simply won't open at all. Dragging to trash doesn't do anything either. Today I have a third drive (Crucial SSD USB) connected and it won't unmount either.
Where do I begin?