How to recover scratched CDs

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Recovering Scratched CDs

 

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.

 

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