Re: Mount DVD disk

[Robert Nestor <rnestor%mac.com@localhost>]

It’s been a few years since I played with RW DVD so this may not be correct, but as I recall they’re basically like flash.  New write/deletes basically revector previously written blocks to new blocks called “sessions” until there are no more unused blocks on the device OR the last write closes the session.  At this point the DVD becomes RO and can only be restored to be RW by totally erasing the DVD.