Do I need to erase the external disk that I want to password protect?
Looking for the above subject, I found that if I create a new image from a drive, I can password protect this image but not the original drive. In-the-other hand, if I want to password protect the drive itself, I absolutely have to erase it. Thank to confirm my understanding please.
iMac 21.5″ 4K, macOS 11.7