Tim

I have an external drive using full drive encryption. When I try to unmount that drive I get the message: "Some volumes contain files or folders being used by application or system. Force unmount?" My question is what would be the best tool to figure out exactly what file or folder is causing this message? The message offers no further info. All files and folders open correctly and I have no issues with the drive functioning. There have been no other issues with this drive other than the force unmount...