Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Memorex discs for Sony Mavica CD Digital camera

I ordered 4 packs of 5 for a Sony Mavica CD digital camera. I was only able to format 5 out of 20 discs successfully. All others ended with a format error. It could be the camera but I doubt it because of the fact that 5 out of the 20 formatted successfully.