It might be that you need a -R DL, not a +R DL. Paul Moortgat On 28 Sep 2009, at 00:21, Robert & Susan Lloyd wrote: > I've been burning DVD +R DL. They play fine on my macs, both > layers. They lose the second layer (apparently) when I try to play > them on My Dell pc (it plays the first half fine). I've tried two > different makes of DVD: verbatim and (I think) memorex. I've tried > burning them with DVDStudio Pro, with disk utility and with Toast. > No difference with this problem. I'm quite sure that the DVD player > on my Dell should play them. > > Any suggestions of what I might try next? I'm trying to get a > working copy to the person who is funding the replication, and it's > nerve-wracking. > > If the DVD is replicated, will that solve this problem? How do I > know ahead of time? > > BobLL