I recently upgraded the OS on my laptop to Win2K Pro. It was a new install. I saved all my pertinent data to disk (CD-R). I've successfully uploaded all files back to the HD with exception of one folder that has some of my images in it. When I used "drop & drag" on that folder as I did on all the others it seemed to work fine until I went to open them in my Canon software program and they weren't there. Then, I went back to the same folder on disk and they won't open in any of the image programs in my OS. Instead I get a "this format is not supported" error message. I then went into properties and saw that all are "read only". Thinking that was my problem I tried to uncheck "read only" but then when I hit "apply" I get "access denied". The problem is apparently isolated to this one disk because I successfully uploaded other images on another disk saved the same way. In doing a search on the net for CD data recovery I see all sorts of warnings that storing images on CD's is not dependable but I'm not seeing why or any after the fact solutions. Is there a recovery process possible for this problem? Thanks in advance for any help.