Todd Denniston wrote:
The following links may be of some use for an attempt at "blanking" the disk before reuse. DVD+RW http://www.freebsd.org/doc/en/books/handbook/creating-dvds.html#AEN25355 Of course the source of growisofs may be of use http://fy.chalmers.se/~appro/linux/DVD+RW/
indeed, when I used CD-RW, I found they worked muhc better if you fully erased them before reuse. I decided they weren't worth the hassle, and due to how cheap CD-R (and now DVD-R) media is, I've never bothered with the -RW stuff since. for reuse, I am more inclined to use a USB flash memory.
I also had a lot of issues with CD-RW media not being as reliable to read as -R on a wide range of readers, I don't know if this applies to DVD-RW or not, but I've had enough issues with DVD_R media being hard to read on the slimline DVD drives many servers have that I don't want to push my luck.