Like Joe said, for the Safedisc DVD's just keep the first megabyte and the last megabyte there, 00 everything else. For safedisc CD's, just look for patterns that if erased give you an invalid image. Then, keep those patterns in the final image, and its all good. Unforuneatley, I find the DVD maxi images to be more useful because when they are compressed by windows compression, they are around 2 MB, while safedisc CD's can range from 5MB-50MB
