Bought an iMac last summer from Apple store and only got around to viewing a DVD last night. This was through a program that I intended to use to rip the DVD for converting to use on iPhone. However on start-up I was prompted with a window that said my drive was region 1 configured and did I want to change to another region. Is this correct, do all Macs come with region 1 DVD drives? The onscreen information told me I could only change the region of the drive 4 times. Is this also correct?