I am attempting to transfer some F1 footage from the HD of my DMREH60 to DVD. I have bought some TDK DVD +RW 1-4xspeed discs ('DVD Rewriteable/DVD reinscriptable). As I write this I hope you are not now reading this and shaking your head at my schoolboy error?! When I try to dub I get a 'Cannot dub. This is a non-recordable disc' message. I cannot seem to format the disc (not an option when I select DVD and go to Functions > To others.... Help!