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What is the recommended method to clean CD-Media? I disagree with the answer
given in my A+ Training Center's A+ course booklet, and with the Center
Director's answer: they both claim that CD-Media should be cleaned with a
circular wiping motion. My understanding of CIRC codes tells me that CD's
should be cleaned with a radial (i.e., from-the-center-towards-the-outside
wiping motion) wiping motion, because a circular wiping motion can
potentially generate a long series of consecutive bit errors during
read-back, which the CIRC codes can't fix. A radial wiping motion would, at
most, generate short bursts of of bit errors, which CIRC can handle.
Googling this issue confirms that I'm right and this A+ test book and the
Director are wrong.
But does anyone have a counter-argument?

thanks,
js.

Nope, I with you on this one.

The Pugmaster


"JS" <> wrote in message news:HHWkb.8003$...
What is the recommended method to clean CD-Media? I disagree with the answer
given in my A+ Training Center's A+ course booklet, and with the Center
Director's answer: they both claim that CD-Media should be cleaned with a
circular wiping motion. My understanding of CIRC codes tells me that CD's
should be cleaned with a radial (i.e., from-the-center-towards-the-outside
wiping motion) wiping motion, because a circular wiping motion can
potentially generate a long series of consecutive bit errors during
read-back, which the CIRC codes can't fix. A radial wiping motion would, at
most, generate short bursts of of bit errors, which CIRC can handle.
Googling this issue confirms that I'm right and this A+ test book and the
Director are wrong.
But does anyone have a counter-argument?

thanks,
js.

JS wrote:

> What is the recommended method to clean CD-Media? I disagree with the answer
> given in my A+ Training Center's A+ course booklet, and with the Center
> Director's answer: they both claim that CD-Media should be cleaned with a
> circular wiping motion. My understanding of CIRC codes tells me that CD's
> should be cleaned with a radial (i.e., from-the-center-towards-the-outside
> wiping motion) wiping motion, because a circular wiping motion can
> potentially generate a long series of consecutive bit errors during
> read-back, which the CIRC codes can't fix. A radial wiping motion would, at
> most, generate short bursts of of bit errors, which CIRC can handle.
> Googling this issue confirms that I'm right and this A+ test book and the
> Director are wrong.
> But does anyone have a counter-argument?
>
> thanks,
> js.
>
>

I never knew there was any other way besides wiping from the center
towards the outside. I believe this procedure is also in Scott Mueller's
"Upgrading and Repairing PCs."


eve

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In article <ei0lb.55$>, says...
>
>Nope, I with you on this one.
>
>The Pugmaster
>
>
>"JS" <> wrote in message
news:HHWkb.8003$...
>What is the recommended method to clean CD-Media? I disagree with the answer
>given in my A+ Training Center's A+ course booklet, and with the Center
>Director's answer: they both claim that CD-Media should be cleaned with a
>circular wiping motion. My understanding of CIRC codes tells me that CD's
>should be cleaned with a radial (i.e., from-the-center-towards-the-outside
>wiping motion) wiping motion, because a circular wiping motion can
>potentially generate a long series of consecutive bit errors during
>read-back, which the CIRC codes can't fix. A radial wiping motion would, at
>most, generate short bursts of of bit errors, which CIRC can handle.
>Googling this issue confirms that I'm right and this A+ test book and the
>Director are wrong.
> But does anyone have a counter-argument?
>
>

All I can offer is that the discrepency and confliction may lie in the
difference between the way audio CDs and data CDs are burned. I have read that
audio CDs should be wiped from the center out because the data is matrixed
circularly or something (sorry, I can't hope to understand the physics/math
involved). That is how they're able to encode more data on audio cd than data
cds.