Hi, I recently bought an external hard drive 3.5 HDD Enclosure (80 GB) and want to back up mac mini (80 GB) with 29.82 GB used. What I am doing: Command and clicking on hard drive and dragging to the external hard drive. Starts copying. Asks for permission, and then sets on its' course. Check on it next day and it says cannot copy documents and the hard drive is only 12 GB used. Not copying completely. I am copying under my profile and not the administrator. Is that a possible reason for partial back up? Should I be dragging the hard drive from a certain path? I am using the icon on my desktop and the info says it is "volume" as in not an alias. Your feedback appreciated. Pammy.