simply copy everything on that disc including that folder to somewhere on your harddrive
1. you'd have a backup of everything
2. that folder may load as normal from your hdd rather then a crummy old disk
did you make the disc yourself?
how did you make it? more specific, what speed did you write the data in ? max write speed or lower?
what exact type of disc is it? is it a rewritable? was something to it written before?
Data retrieval software?