"PS4 Unrecognized Disc but only one disc"에 답변I 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.