Surprisingly, I'm getting good data from CD-Rs more than 14 years old, and from DVD-Rs nearly 12 years old. Your mileage may vary.Three years ago I repeated the mind-numbing process of feeding 45 disks through the reader and verifying their checksums. Two years ago I did it again, and then again a year ago.
It is time again for this annual chore, and yet again this year every single MD5 was successfully verified. Below the fold, the details.