I am looking to buy autochart pro and just have a few questions. Does the disk need to be in the disk drive after the initial install to use the software? Or after you install and register can you take the disk out and use the software? The reason I ask is im looking to buy a 10in 2in1 laptop to mount on my boat and link it to my unit so I can use the autochart live feature. You have to use a external disk drives for them, so I figured if all I have to do is install it then I could just borrow my dads drive to do that.