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CD-Recordable discs unreadable in less than two years
CDFreaks.com (by way of SlashDot) ^ | 19 August 2003 | Dennis

Posted on 08/24/2003 7:12:45 AM PDT by Eala

The Dutch PC-Active magazine has done an extensive CD-R quality test. For the test the magazine has taken a look at the readability of discs, thirty different CD-R brands, that were recorded twenty months ago. The results were quite shocking as a lot of the discs simply couldn't be read anymore:

Roughly translated from Dutch:

The tests showed that a number of CD-Rs had become completely unreadable while others could only be read back partially. Data that was recorded 20 months ago had become unreadable. These included discs of well known and lesser known manufacturers.

It is presumed that CD-Rs are good for at least 10 years. Some manufacturers even claim that their CD-Rs will last up to a century. From our tests it's concluded however that there is a lot of junk on the market. We came across CD-Rs that should never have been released to the market. It's completely unacceptable that CD-Rs become unusable in less than two years.

On the image you can see the exact same CD-R. On the left you see the outcome of our tests done in 2001. On the right you see the same CD-R in 2003. The colours indicate the severeness of the errors in the following order; white, green, yellow and red whereas white indicates that the disc can be read well and red indicates that it cannot be read.

For those of you who are interested, the original Dutch article can be found here and in the September issue of PC-Active. Please discuss this subject in our Media Forum.

(Excerpt) Read more at cdfreaks.com ...


TOPICS: Crime/Corruption; Technical
KEYWORDS: cd; cdr; cdrom; cdroms; cdrs; cds; quality; techindex; unreadable
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To: templar
Maybe we ought to go back to the old style of recording, but on titanium instead of vinyl for important stuff. Edison records still play just fine.

What almost made me cry is the discovery that a Japanese company actually is producing a contact-free laser driven turntable that nobody can afford to buy at $10k a pop.

If mass produced and simplified by advancing electronic technology, I can foresee stamped media literally lasting indefinitely, and affordable to a larger segment of the world.

I sure as heck can't afford one currently.

41 posted on 08/24/2003 8:01:02 AM PDT by Publius6961 (californians are as dumb as a sack of rocks.)
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To: Publius6961
(Sounds like the ideal subject for a good movie, no?)

Ever read the book "Heiro's Journey"?

42 posted on 08/24/2003 8:01:46 AM PDT by RadioAstronomer
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To: Physicist
ping.
43 posted on 08/24/2003 8:02:45 AM PDT by RadioAstronomer
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To: Publius6961
How many reading this can read 5-1/4 inch floppies? Anyone?

I have a 486-66 machine that is still functional. Has 3.5" and 5.25" drives. It didn't come with the 5.25", I had to install it when I needed to use some old software about 6 years ago. I have a functional (I think) punched tape reader in storage.

44 posted on 08/24/2003 8:03:04 AM PDT by SC Swamp Fox (Aim small, miss small.)
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To: RadioAstronomer
I still have my very first VHS tape I ever recored back in 1981. It still reads fine 22 years later. :-)

Hmmmmmm. My first tape recorded was a Beta. I should drag it out and check it out. Circa 1976. Yes, I still have a Beta machine too.

45 posted on 08/24/2003 8:03:45 AM PDT by Publius6961 (californians are as dumb as a sack of rocks.)
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To: RadioAstronomer
Ever read the book "Heiro's Journey"?

No, but I'll put it on my list.
I do however, recall vividly Fahrenheit 451.

46 posted on 08/24/2003 8:06:05 AM PDT by Publius6961 (californians are as dumb as a sack of rocks.)
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To: RadioAstronomer
Literally millions of bits/second are being recorded non-stop in millions of places simultaneously.

A significant problem might be deciding what is worth storing and what is not. A historian and a scientist might have very different views as to what is and is not important.

47 posted on 08/24/2003 8:12:13 AM PDT by templar
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To: Publius6961
Yes, I still have a Beta machine too.

Now that I dont have! But I do have both Laser and Capacitive disc players!

Take a look at this site:

http://www.labguysworld.com/VTR_Links.htm

48 posted on 08/24/2003 8:12:14 AM PDT by RadioAstronomer
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To: Publius6961
No, but I'll put it on my list.
I do however, recall vividly Fahrenheit 451.

Both books caused me to think deeply about what could happen.

49 posted on 08/24/2003 8:14:09 AM PDT by RadioAstronomer
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To: Publius6961
"How many reading this can read 5-1/4 inch floppies? Anyone?"

One of my PCs still has a 5-1/4" floppy. hehe
50 posted on 08/24/2003 8:16:06 AM PDT by Texas_Jarhead
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To: FreedomPoster
>5-1/4 inch floppies? Anyone?

5-1/4 inch floppies? How about 9-track tapes!


How about 8" floppies?
51 posted on 08/24/2003 8:16:53 AM PDT by Texas_Jarhead
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To: templar
A significant problem might be deciding what is worth storing and what is not. A historian and a scientist might have very different views as to what is and is not important.

That very thing was addressed in H. G. Wells "The Time Machine".

52 posted on 08/24/2003 8:18:39 AM PDT by RadioAstronomer
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To: Texas_Jarhead
Look at post #14, hehe
53 posted on 08/24/2003 8:20:09 AM PDT by RadioAstronomer
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To: RadioAstronomer
How many names for the 'creator' have you logged so far? ;-)
54 posted on 08/24/2003 8:20:31 AM PDT by Eastbound
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To: Eala
Punched cards are the only way to go.
55 posted on 08/24/2003 8:27:13 AM PDT by Consort
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To: Eastbound
How many names for the 'creator' have you logged so far? ;-)

"The 9 Billion Names of God". Great short story. :-)

56 posted on 08/24/2003 8:28:32 AM PDT by RadioAstronomer
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To: Consort
Punched cards are the only way to go.

I even have a few of those laying around, however, I cant read them except by hand now.

57 posted on 08/24/2003 8:29:27 AM PDT by RadioAstronomer
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To: Consort
Punched cards are the only way to go.

But always, always, always sequence-punch them!!!

58 posted on 08/24/2003 8:30:13 AM PDT by Eala (When politicians speak of children, count the spoons. - National Review Editors)
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To: Consort
What about missing chads?
59 posted on 08/24/2003 8:31:54 AM PDT by PMCarey
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To: RadioAstronomer
I knew it! I just knew it was you. All the circumpolars are gone. Enough already!
60 posted on 08/24/2003 8:32:32 AM PDT by Eastbound
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