Hi, I just need to be sure: I have an iMac, with an external SSD connected. This external SSD is my boot drive and contains all my applications. The internal HDD is effectively an "external" HDD. Time Machine doesn't really say which disks it is backing up. I need to be absolutely sure that it backs up both the external SSD bootdisk, and the internal/"external" HDD. Anyone that can tell me? Thanks a lot!