When I plug in a device [card/usb drive] I get a screen asking me which device to allocate to, Mac or Parallels. When I insert a DVD I don't get this option, it goes straight to my XP. How do I get it to give me a choice?
I have the same problem.
While this fix won't ask you which OS you want to open the DVD in, it is the best one I have found to allow my Mac OS to use the drive: