I am getting to some of the final steps before installation into the car. I have read some threads that suggest not to load up your primary hard drive if you want to be able waking from hibernation quickly. I am wondering what others suggest about placing a large mp3 collection - on a DVD-Rom or external drive and how that may increase or decrease the amount of time before music is heard when starting a car. I assume there are other considerations such as the bearings in the dvd-drive in extreme cold, etc. Thanks -