Here is the message: Erasing “G-DRIVE mobile USB-C” (disk4s2) and creating “G-DRIVE mobile USB-C” Unmounting disk The volume “G-DRIVE mobile USB-C” on disk
MacBook Pro 13″, macOS 10.13
First remove the drive as a backup disk from your Time Machine settings.
The open Disk Utility and under the View menu choose Show All Devices.
For the disk you want to erase, select the uppermost name of the drive, this is the name of the hardware device (not a container and not a volume, but the higher level device itself).
Select erase. You may have to wait for a while, give it at least 10 minutes. Usually it takes a minute or so but sometimes can take longer.
First remove the drive as a backup disk from your Time Machine settings.
The open Disk Utility and under the View menu choose Show All Devices.
For the disk you want to erase, select the uppermost name of the drive, this is the name of the hardware device (not a container and not a volume, but the higher level device itself).
Select erase. You may have to wait for a while, give it at least 10 minutes. Usually it takes a minute or so but sometimes can take longer.
Follow previous very good advise
Just as an Illustration of what @steve626 was referring to in Top Most Device my manufacturers Name
Time Machine says that my GDrive mobile USB backup is too full. I'd like to erase it but cannot.
