Do you use Toast or the Apple burn software? Is the DVD capable of DVD +/- ? My Pioneer can. See your System Profiler disk burning. (My Mac Pro: DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW) Paul Moortgat On 28 Sep 2009, at 02:31, Robert & Susan Lloyd wrote: > For dual layer, the burner on my Mac Book Pro will only burn a a DVD > +R DL. It won't burn a DVD -R DL. Incidentally, the DVD plays okay > in my DVD player. > > BobLL > > James Asherman wrote: >> Wow didn't even really notice that. >> SECOND PAUL's OPINION. Don't EVER give anybody a +. >> J >> On Sep 27, 2009, at 7:37 PM, Paul Moortgat wrote: >> >>> 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