Bruce -- Thanks for the reference to NIST--the report responds to
virtually every question that has been debated on this and other lists
on CD/DVD longevity. I was interested in comments that storage life
is based on 77 F and 50 % humidity. In most cases the temperature
standard is met in our home environment. I wonder about the
humidity--as you know in Tucson--we virtually never see 50% --is it the
more critical factor?
The report brought back memories for me-- I worked there in the mid
70s--then known as NBS or National Bureau of Standards. Amazing place
they had experts on almost everything. I remember talking to one of the
computer experts and he showed me this amazing piece of plastic which
could be used to store data on. It was one of the early floppies--7-8"
type. He worked in the organization that has now published this report.
Anyway thanks for the info and the memories.
John in Tucson
On Dec 3, 2005, at 2:49 PM, Bruce Johnson wrote:
On Dec 2, 2005, at 3:30 PM, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
Andrew Grebneff writes,
<Could it be that the drive's laser lens is dirty? I tcould be that
there is not sufficient dirt to stop it reading barely adequately,
but enough to stop it reading well enough booting?>
I suppose it's a possibility, but how would I be able to tell, and
if it
IS dirty, how would I clean it?
This is probably not related but I read an article a couple of years
ago
that said the glue used in CD labels spawns a fungus that will
actually eat
through the data layer of the CD. Turns out CD's aren't forever. The
article
suggested using magic markers or something else besides labels.
The National Institutes of Standards and Technology has a guide to
archiving electronic data:
<http://www.itl.nist.gov/div895/carefordisc/
CDandDVDCareandHandlingGuide.pdf> and has done considrable research on
the subject.
--
Bruce Johnson
"No matter where you go, there you are", B. Banzai
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