Recovering Scratched CDs

[apeX]

[SIZE=4]Recovering Scratched CDs

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Every user has had trouble with a scratched CD. In the case of data CDs (CD-ROM), the drive cannot properly read the CD, giving rise to reading errors. In the case of audio CDs, the CD skips when we play it.

The first thing to do when coming across a CD with a read error is to clean it, to check whether it the error is not being caused by a dirty surface. You can even wash the CD gently with a little detergent, using your fingers to clean it (avoid sponges, since they can scratch the CD). If the error persists, try reading or playing the CD on another drive. If another drive (or CD player, in the case of audio CDs) gives the same result (read error or skipping, in the case of audio CDs), it will mean that the CD is scratched.

Looking against the light, the recording surface (the flip side of the label) of a CD with this kind of trouble will allow you to easily see one or more existing scratches. A CD's data is recorded on a metal layer inside it, a silvered layer on commercial CDs, which is usually golden on CD-Rs. This metal layer is inset in a transparent plastic covering (polycarbonate), used to protect the CD's metal layer and allow printing a label on the side not used for reading.
A CD-ROM drive or CD player utilizes a laser beam to read the metal layer. This laser beam crosses the plastic layer and reads the metal layer. If the plastic layer is scratched, the beam will be unable to pass through it, resulting in a read error or skipping the music. In other words, the data to be read are still in the CD, the trouble lies in the layer of plastic.

As the CD's contents are preserved, a scratched CD can be recovered by polishing its plastic surface. If, after carrying out the above cleansing, the CD persists in giving reading errors, just polish the CD with toothpaste. That's right, toothpaste. It works wonders, and you won't spend a fortune buying professional cleaning kits. Polish the scratches with a cotton swab, rubbing gently the paste-imbued swab over the scratches until they disappear or until you notice that you have removed them as far as possible. Sometimes the paste may cause new scratching, but it will be merely superficial and easily removed. After clearing the scratches, wash the CD in water.
If there are still scratches that the toothpaste has not managed to removed, use a metal polish (Brasso) in the same way as described above. Finally, rub Vaseline on the CD, very gently (do not press hard), from moving out from the centre to the rim.

The last step will be testing the CD. If it starts working properly, great. If not, repeat the above procedure, looking for the scratch that is causing the error and concentrating your polishing efforts on it.[/SIZE]

[dodo79]

very nice information I will try this with my scrached cds...

[mattcch2007]

in the computer plaza here, there is a liquid pack to make the surface of
the scratch cd become clear but sale for hk45~50 (expensive)
but some users said it is ok for getting out important data

[montsa007]

recovering a scratched cd is like asking a 80 year old grandpa to run in a marathon lolz

[Irvine_Welsh]

Originally Posted by montsa007

recovering a scratched cd is like asking a 80 year old grandpa to run in a marathon lolz

You are **** right, but sometimes it is very important to recover some sate.
I thing nobody goes to recover cd only to use it morre. I thing everybody do it to save information.

[QueenZ]

Xe, nice info. I'm just not sure it will work but i'll try this anyway...

[montsa007]

i use pen drive so cd's chew dust!!

[kubuntux]

nice information.. thanks for sharing...

[subodh]

Thanks! It really usefull to me. I will try it out.I have bad experience of loosing data on CDS. So, I purchased another 120GB harddisk and put files there.

[inportb]

Originally Posted by montsa007

recovering a scratched cd is like asking a 80 year old grandpa to run in a marathon lolz

Indeed. But then you would be able to burn another CD with the recovered data.

I've always used toothpaste to polish things -- it's very useful.