Thanks for the reply ...
The media is a DVD-RAM 5.2 GB (double sided) Maxell, Type I, VD-RAM52F. Data is written to both sides.
I'm not sure what the format/file system is on the media. I used a tool called Gear and that toolkit couldn't determine this information either. Windows properties calls is RAW which doesn't help either. On NT4.0, I can read/write to and from so I believe there must be some form of FAT/udf on this media but I don't know.
The contents of the disc is audio (wav) and video (dvm) files. Thanks again.