CD-R =Record Write once, CD-RW =Rewrite Write many times.
Copying CD problems.
1. CD is copy righted and protected
2. CD player and writer on same IDE cable (copying on the fly)
3. CD writer does not like the type of disks you are using
4. DMA not set on IDE channel for writer.
5. You have two or more burning programs on your PC. they are conflicting switch off (disable)windows writer (XP), uninstall roxio or nero.