1. I have an Imac that I use for editing in final cut 7 but render and do all the work to my G Drive 2 Ter external hard drives. 2. Today out of nowhere my imac will not recognize any of my 4 hard drives I can plug and unplug and nothing happens.. 3. I have not changed anything since yesterday when all was working well. 4. I have changed cables with new cables that I know work. 5. I plugged each hard drive in to my mac book pro and they pop right up no problem. 6. Finally, I have made sure everything is checked properly in finder/preferences, etc... as I said it was all working perfectly yesterday at time of close... Now it's like my imac just doesn't read them... thank you in advance for your help.