Hi I have a mac pro running Leopard with Time Machine backup on an external 500GB FREECOM drive. My issue is that I cannot boot my mac while the drive is connect, because it seems it tries to boot from the external drive and it starts displaying a flashing folder with a question mark in it. So everytime I need to fire up my machine, I need to disconnect the external drive > boot > connect the external drive. Could anybody assist please? Thanks!