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I am getting an error and not able erase in order to format a new WD Passport 4TB
-using a 2013 iMac, MacOS Mojave
I did first attempt to install using the WD software provided (diagam #3)
iMac 27″, macOS 10.14
Start by uninstalling the Western Digital software. It has nothing to offer regarding allowing the Mac to use the drive, and manufacturers' drive utilities often get in the way.
Next, eject all of the drives that are connected to your Mac.
Reboot the computer and ensure you are running Mojave 10.14.6, the most current version. If you are not, then check for and install and available updates for Mojave. (NOT looking for OS upgrades here).
Then reconnect your new drive, launch Disk Utility and try again to format the drive.
Uninstall the WD software.
Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes or more.
Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.
Can not Format new WD Passport external
