WheneverI put a disk into the dvd drive I just get this clicking noise so I guess its time to replace it. I don't have the cash right now for a new drive inside the mac so I figure I can use an external one. Found out that this works for the MBA http://www.newegg.com/Product/Product.aspx?Item=N82E16827136166 But I am worried becuase I don't own a Mac Book Air. Is there some sort of list of external drives that work with OSX or will I have to hope that the Mac Book Air doesn't get preferential drivers for external Disk drives. If not I'll just have to scrounge around for the 250 to replace the drive in my mac.