Currently I am working to back up all my files since my computer needs to be worked on, so I have hooked my macbook pro up to another macbook pro using the Target Disk Mode and firewire. I am transferring the files from the first mac through the second and onto an external drive, however I find that it is not copying all of the files over and tells me "The operation can't be completed because you don't have permission to access "file name here"." I assume I need to somehow give the second mac access to the first with the username and password? Does anyone know if that is the problem and how to do this? Help would be much appreciated, it's been a stressful past few days not being able to use my computer.