Hi, i have a question that would seem easy enough to solve, but i havnt been able to find any answers anywhere. I have a disk image that is 7.4 gb, can i use disk utility to burn that to a dual layer disk? does it automatically detect that the file is too large for normal disks? i have dvd dl -r discs and my machine is dual layer ready i know for certain. any help would be very much appreciated. thanks