Disc rot is a problem on pressed games too. A CD is a piece of polycarbonate with aluminum on one side, then lacquer on top of that. If the lacquer fails then the aluminum can oxidize and flake off.
I hear people on the internet say this a lot, but I have yet to encounter a disc with this, and I have CDs that go back to the 80s. Even talking to other people, the only time I have heard of it happening was with Sega CD stuff. I think most pressed discs will be good for a long time, there are just handfuls of bad batches that die prematurely. I don't think it's as common as internet people act like.
As far as CD Rs though, they are very unreliable. Was going through some CDRs and DVDRs that had old home movies and photos, and a good amount of them didn't work anymore.
Disc rot is a problem on pressed games too. A CD is a piece of polycarbonate with aluminum on one side, then lacquer on top of that. If the lacquer fails then the aluminum can oxidize and flake off.
I hear people on the internet say this a lot, but I have yet to encounter a disc with this, and I have CDs that go back to the 80s. Even talking to other people, the only time I have heard of it happening was with Sega CD stuff. I think most pressed discs will be good for a long time, there are just handfuls of bad batches that die prematurely. I don't think it's as common as internet people act like.
As far as CD Rs though, they are very unreliable. Was going through some CDRs and DVDRs that had old home movies and photos, and a good amount of them didn't work anymore.