The first rule of troubleshooting is to obtain a known working device, which you can substitute to test and narrow down where the problem lay. FYI, if you wanted to confirm the File System, then you can use the Disk Utility to display Info about the drive. I'm guessing that by 'backups,' you have been using Time Machine.Ĭonsidering that this is a new issue, it is fair to say that the external drive has been formatted correctly for use with Mac OSX (i.e., Mac OS Extended (Journaled)). By 'Passport,' I am assuming that you are referring to a Western Digital external drive, which you have been using to perform regular backups.
