On Nov 27, 2007 3:56 PM, John Summerfield <debian@xxxxxxxxxxxxxxxxxxxxxx> wrote: > Kam Leo wrote: > > >> > >> -- > >> Robin Laing > > > > Use DVD-R or DVD+R media. I would not recommend using DVD+WR media. > > > > You're supposed to be able to use DVD+WR as a DVD-ROM. Well, long > > story short, a DVD-ROM disc created on DVD+RW media 6 months ago is > > totally unreadable. I tried reading the data using 4 different drives. > > None of the drives could detect that media was in the drive. There is > > probably something wrong with the burner I'm using. It is also causing > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > If so, nothing else is relevant. > > 4X CD-RW media to become coasters after an erasing operation. > > > Nothing here suggests to me you'd have done better with write-once media. > > You should verify important backups immediately. The data passed verification when burned and was readable on the drive of another computer. Only months later when I tried reading the data did I discover the disc had become unreadable. By the way, 4X-12X CD-RW media appears to be erasable/reusable on the suspect drive. I'll have to search through my stack of backups to see if any were created on that drive and if the data is still readable. > > Cheers > John >