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.Two years ago I repeated the mind-numbing process of feeding 45 disks through the reader and verifying their checksums. A year ago I did it again.
It is time again for this annual chore, and yet again this year I failed to find any errors. Below the fold, the details.
- Month: The date marked on the media in Sharpie, and verified via the on-disk metadata.
- Media: The type of media.
- Good: The number of media with this type and date for which all MD5 checksums were correctly verified.
- Bad: The number of media with this type and date for which any file failed MD5 verification.
- Vendor: the vendor name on the media