On 28 Feb, 2007, at 4:00 AM, Jan Melichar wrote: > Is this because the older drive on the G4 does not recognise RW DVD > or is there some other glitch operating here? In a one-word answer.....YES.... to the first part of your question. Your G4 has an older model reader and is unable to recognize DVD-RW. You could upgrade to a newer DVD-RW drive for the G4 by searching the web for Mac compatible DVD-RW models like the Pioneer DVR-111 in the price range of $35-45. This model gives you the chance to write to double layer DVD media if you need.