Can you add more photos to either a CD-R or CD-RW?

You can add more photos on to a CD-RW. RW stands for ReWritable. With a CD-R you can't puts anything on it more than once. You add songs to it once and that's it. It is how it is, you can't do anything else with it. I prefer to get a CD-RW because you can reuse it. Say I had a song on there, but it messed up. I can either find it in my computer and delete the song and then put the right one on it. Or i can add the right one along with the wrong one. Hope this helps lots!