I keep getting this message when trying to encrypt an external drive. I've tried two different drives - an SSD with my Time Machine backup on it as well as a standard HDD with no contents. Both are formatted with Mac OS Extended (Journaled).
Tried encrypting from Finder, Disk Utility and Time Machine backup option for encryption checked. Same error trying it from all 3 methods.
Can anyone shed some light on this? Am I doing something wrong?
TIA
Tried encrypting from Finder, Disk Utility and Time Machine backup option for encryption checked. Same error trying it from all 3 methods.
Can anyone shed some light on this? Am I doing something wrong?
TIA