I have two 2TB Passport Ultra external hard drives. I had them set up to back up my files from my Windows computer, and it worked great. I recently bought a Mac computer, however, and want to be able to back up my documents and pictures from this computer as well, without deleting the files already on there. It won’t let me even copy and paste a new file on to it, however, let alone automatically back things up. How can I set this up without losing my old files?
Thanks so much!