사용자에게 답변하기: PS4 Unrecognized Disc but only one discI had this same problem tonight. Tried the system update in safe mode, system rebuild in safe mode, the tapping suggestion and nothing worked. I eventually found this video on youtube https://youtu.be/wqOhiiIbDb8 It was not a roller issue, but what I noticed was that there was an incredible amount of dust inside the console. It was everywhere. I gave it a good clean, put it all back together and tested it. Believe it or not, it is working now. Easy to do and if you don't have a set of security screwdrivers (which I don't) a very small flat headed screwdriver will release these. Took 15 mins to do. Hope this helps as I was getting really infuriated with watching all these other YouTube videos for 10 mins only to be told to swith the console off and back on again. Wtf.