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Posted by NRen2k5 on 11/25/06 12:21
Charles Russell wrote:
> NRen2k5 wrote:
>> john wrote:
>>
>>> Some of the CDRWs I burned 7 years ago aren't being read by my current
>>> (XP) computer.
>>>
>>> How can I help it identify them?
>>
>>
>> Sorry for not answering the question (I see other have answered it well).
>>
>> But I should point out that this isn't what CD-RWs are meant for. They
>> are meant for short-term storage. If you want to burn things for
>> long-term storage, you should get some good CD-Rs from a good
>> manufacturer such as Taiyo Yuden.
>
>
> Are you sure CD-R's last longer than CD-RW's? My understanding is that
> the data on a CD-R (or DVD-R) is burnt into a dye layer, whereas the
> data on a CD-RW (or DVD-RW) is melted into an alloy layer. As a
> chemist, I would expect most dyes to fade with time. Hunting on the web
> for advice on archiving, I only find suggestions such as to keep disks
> out of direct sunlight, store on edge, etc. without hard numbers on what
> lifetime to expect for any media. So for important files I tend to keep
> one copy on CD-R, one on DVD-R and one on DVD-RW. (I'm risk-averse.)
Cd-RW is designed for short-term storage rather than long-term. When the
two conflict, I tend to believe design over the underlying science.
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