To recover a damaged CD:
dd if=/dev/hdc of =/home/sam/myiso.iso bs=2048 conv=notrunc,noerror
Mount the resulting myfile.iso:
In fstab:
/home/sam/myiso.iso<space>/mnt/myiso<space>iso9660<space>rw,users,noauto <space>0<space>0
at command line, as root:
mkdir /mnt/myiso
mount /mnt/myiso
cd /mnt/myiso
mkdir /home/sam/recover
cp -r<space>*<space>/home/sam/recover
all the files which are whole files will be in /home/sam/recover directory. If this doesn't yield any files the CD toc is wrecked. I don't know what you do when that happens. I hope I never have to find out. I hope this helps.
Cut & Polish
2000 grit to remove deep scratches
3000 grit to smooth
Turtle Wax Polishing Compound Light to Medium