[game_preservation] CD/DVD Rot Data

[Devin Monnens]

For anecdotal evidence, early CDs printed with silver dyes are reported to
have suffered bit rot. I also referenced a message board post regarding
some Dreamcast discs failing in the White Paper. From personal experience,
3DO some games (D&D) are transluscent when held up to the light, which
suggests to me the disc will fail soon. However, this is anecdotal - what
is needed is raw data indicating which types of discs. Different types of
dyes and pressing processes would result in discs of varying quality.

There is also something to be said with the way optical disc media is
written on the discs. The Game Preservation Society was working with PC
Engine games. You should contact Joseph Redon (shiroitachi at gmail.com) and
ask him about what sort of data they have on longevity.


On Fri, Jan 10, 2014 at 11:16 AM, Judith Haemmerle <
judith at digitalgamemuseum.org> wrote:


> Alex, have you read Joe Iraci's paper, *The Effect of Jewel Cases on the

> Stability of Optical Disc Media*? If not, ping me for citation details

> off list.  It is exhaustive and covers every imaginable type of CD.

>

>

> Judith Haemmerle, Executive Director

> Digital Game Museum

> 3553 Ryder Street

> Santa Clara, CA 95051

> http://www.digitalgamemuseum.org

>

>

>

>

> On Fri, Jan 10, 2014 at 7:47 AM, Alexander Duryee <

> alexanderduryee at gmail.com> wrote:

>

>> I'm in the process of gathering data on optical media migration for

>> publication/presentation this spring.  I'd like to be able to make a case

>> for/against immediate action, so the more evidence available, the better.

>> I've come across anecdotes and data from archives on recordable discs (and

>> they're absolutely nightmarish), but there aren't many communities working

>> with pressed CD/DVDs.

>>

>> Given the prevalence of CD/DVDs as game medium, I'm curious if anyone in

>> the game preservation community has anecdotes or data on the readability of

>> commerically-manufactured discs over time.  If there's more specific

>> information (type of damage, age of bad discs, manufacturer of bad discs,

>> etc), that would be tremendously useful as well.

>>

>> Thanks!

>> --Alex

>>

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>>

>

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>



-- 
Devin Monnens
www.deserthat.com

The sleep of Reason produces monsters.
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