Hi Dunk, I have an issue that the old iMac doesn't have enough room on the HDD (its quite old) for a full migration of data from the external HDD back up. Can I migrate the Time Machine data onto another external HD and then access from the iMac? (I don't think my imac is upgradable it's too old) i.e plu another empty HD into the old imac, then plug the back up disck in as well and transfer directly onto the new empty Hd?