So far the only CD failures I have read about have been partial
failures. Of course, if what fails is the directory you may still be in
deep trouble. I've never heard yet of recovery software for a CD or DVD
but guess they may exist.
Based upon the many stories of short lifetimes I think it would be
advisable to recreate your CD's and DVD's every two years.
Chuck Norcutt
Winsor Crosby wrote:
> This is what I meant about the process. Suppose you have made two
> copies, I assume to back up the hard drive. Your hard drive fails
> after 5 years. You pull out your back ups. First one may have failed
> at 2 years and the second one at 4 years and you had no idea. And
> maybe it would help to use disks by different makers or batches for
> each of the copies.
>
> The other thing I have heard is that people find the disk has not
> just failed in spot, but is completely unreadable. Isn't it just a
> phase difference being detected in a dye layer? Probably keeping in
> a cool, dark place helps, but it is chemistry, just like film. Then I
> think the whole dye layer would go at once, not just in a particular
> segment.
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