text: why is my mac mini dvd burner not working? it gives me (error code 0x80020042).? dvd problem matshita dvd-r uj-845-- burning the disc failed because the cd cannot be written to.(error code 0x80020042)>>>thats the error massage i keep getting. i burned dvds before but now it gives this error. the dvds are blan(the computer seems to recognize that its blank). its from the same pack that i burned before. but when i click to burn it gives this error. what could be the problem? is it the dvd disc (staples dvd-r, i burnt one this same brand beofre), it my computer, my dvd burner, does it need cleaning or something, or is it something totally different?  please help me, i need to burn some of the files and get some room in  my computer so i can work on other programs. don't be so concerned with getting a high burn rate. what would you rather do 'burn a coaster fast' or a 'good disc slowly'. discs burned at lower speeds tend to be much more compatable with set-top players.  are you able to create a disk image of your project (file>create disk image)?  do you have the latest toast 7 update (7.0.2)?  remember the latin saying "festina lente" - make haste slowly!   for anyone else out there facing the same issue...i figured out a cheap way to solve my dual layer burn problems...  i used toast 7.0 to compress my huge project onto a single layer disk. the quality was reduced slightly, but i was unable to discern the difference when i played the disk on my dvd player. so, until dl disks come down in price, i refuse to make any more $5 coasters. yippee!   multiplexor error. the disk failed to be written: error code 0x80020042.  based on the rare experience burning disks other than verbatim, that sounds like you're trying to burn too fast. i had that type of error using fuji someone bought for me. sent him home with those and used my verbatim.  i recommend dumping the memorex and get some verbatim dvd+r dl. and use the 2.4x speed in toast.  i've read here that ytou can create a disk image with the breakpoint and use toast to burn it. have not done that myself.