when i back up some movies in avi or mpg format my sonic recordnow seems to burn a blank dvd fine, but once its burned and i try to put it back in the drive to read ot burn other files.. it wont read it( thus it wont let me add any more files the funny thing is older dvds seem to work( can be read and written to, but the recent ones cannot. and if i try it in another laptop, it seems to read them fine. can anyone help i have been using memorex dvd+r for a while and it usually works fine my burner drive is an NEC ND-6500a i dont know if its dirty.it seems fine. can be have something to do with DLA? bad discs? i kept using many discs to test. it appears to write to it fine but it wont let me read the written data on this drive. it makes no sense could it be the firmware?( is there such a thing as a firmware virus?)

You told us the burner brand & the media you burn but you left the burner software itself. What software have you used? i_Xp/VistaUser

sonic record now 7.3 LE i uninstalled it( all sonic) then reinstalled all sonic from my dell disc. it seemed to be back to normal but it only worked once when i tried again it went back to the way it was it seems

opps i made a mistake i meant the dvd can write but NOT READ THE WRITTEN DISCS( forgive the error in the subject line)

This sounds like a really trivial problem so I wouldn't start looking at DLA and stuff to fix this. You'll probabaly break more than you'll fix with this approach. Lets take a closer look at what your doing. HOW are you burning? Give us a complete walk through as to how your adding files to the compilation and burning it. LOTS OF DETAIL!! EXACTLY WHAT MEDIA are you burning to? If it's a TDK DVD-R 4x, then please advise us exactly what your using. HOW are you attempting to playback the media, again LOTS OF DETAIL!! Good luck, J. j e r u v y a t y a h o o d o t c o m

memorex dvd+r 16X or maxelle 16X it seems if the disc is blank the drive can write to it. but once its written to. it wont read it on that drive if i try on another laptop. it can be read fine. it can read CD-data disc and burn to them and read it but it cant do it on dvd+rs not anymore. i backed up some movies i made with my digital camera. they are on AVI or MPG format. i use sonic record now... i put in a dvd+rdisc.... i burn the data but i leave the disc open to i can add more videos if need be to fill the disc up, this has been working fine for a year. once i write to it. it wont read that same data if i place it in the drive. it says D:\ uis not accessible ,incorrect function but if i were to create a dvd video disc ( by using mpg files and author it( with TMPGENC AUTHOE ) then use a dvd software( such as dvd cloner 2.0)that can be played in standalone DVD players i can watch it that way,it seems to still do that fine. just not data for a dvd+r

also i tried to read a CD-r. that works fine. it seems it can read and write cd-rs but not dvd+rs/