I am using a Creative Labs 4224RW. I have backed up many programs from internet onto a RW CD. After a month or so, for some reason, my computer is now unable to read the CD, bringing up the text: “This disc contains a “UDF” file system and requires an operating system that supports the ISO-13346 “UDF” file system specification.” I know this disk is ok, I am using Prassi aBCD for packet writing. I heard there is a way to read that data without destroying disk. I would like to do that and then burn another disk. Please help me if you can. Thanks!