I have an (old now) iBook G4 with the Tiger operating system (so no Time Machine) and have connected a 2TB WD Elements external hard drive, mainly for the purpose of saving my iPhoto and iTunes collections, so that I can delete some of them from my laptop's hard drive and free up space on it. I have followed all of the tutorials as to how to do the above, and all goes fine until I start to delete photos or songs from the laptop. Whichever songs or photos I delete from the laptop also disappear from the external hard drive. I have tried disconnecting the external h/d whilst deleting stuff and then re-connecting it, and lo and behold, whatever stuff I have deleted from the internal hard drive has gone from the external one too. Please tell me what on earth I am doing wrong? Many thanks.