LeeRevell said:Probably using bargain price disks. Whenever I bought the cheaper brands fully half the disks in the package fail to inititalize. Yes, even optical media can degrade, but far more slowly that magnetic. And keeping the old vinyl records in a vehicle - bad juju! I have had cassettes warp from vehicle heat too.
ALL storage media have their pros and cons. I have found quality CD and DVD to be the most robust of the common types.
The other thing you had to look out for, back in the age of vinyl records, was the heat affecting the shrink-wrap around the sleeve and warping the whole package. You had to take that stuff off the second you exited the store on a hot day!