Coolest Way To Erase A CD

Submitted by: pmarren 5 years ago Science

But does anyone know how it works exactly?
There are 59 comments:
Male 6,694
Couldnt you just throw it away in the trash can next to your desk ?
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Male 521
@walkrunfly
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Male 559
They use aluminum for the shiny part in the middle. For master recordings, they use 24K gold. I have a copy of Pink Floyd "Dark Side of the Moon" pressed on 24K gold.
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Male 473
@Canoas I don`t think the shiny surface is sandwiched between layers. We used old CDs as bird scarers, and after just a few weeks the shiny side had flaked off leaving clear plastic discs.
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Male 117
why does everyone here know how to erase cds? why would you ever need to do this? WHAT ARE ON YOUR CDS?
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Male 427
"based on how fast it`s working, the heat is gone before it could melt the plastic so lots of cd`s would still be readable if you just re-mirrored it..."

But how would you access the "shiny part" (I don`t know what it`s made of). Thats stuck being two layers of plastic.
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Male 5,190
WTF?

lol @ demonveteran.
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Male 2,424
I usually just snap one into tiny little pieces. But I mean you could always get some industrial power line equipment and nearly fry yourself instead.

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Male 160
what in the name of satan????
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Male 2,419
based on how fast it`s working, the heat is gone before it could melt the plastic so lots of cd`s would still be readable if you just re-mirrored it...
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Male 10,339
"The easiest way to erase a CD or any other media is to give it to my girlfriend and say `hey, keep this safe`. guaranteed the data will be completely lost for good within the day."

If she scratches the hell out of it, give it a good coat of toothpaste, let it dry, then wipe it (gingerly) until it`s all gone. The toothpaste will fill in the scratches and the lazer won`t skip anymore.
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Male 238
It must have been Rebecca Black`s new album
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Male 12,138
[quote]The easiest way to erase a CD or any other media is to give it to my girlfriend and say `hey, keep this safe`. guaranteed the data will be completely lost for good within the day.[/quote]
Listy, your pain. I feel it.
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Female 423
He sounds like the gangster form Snatch who feeds people to pigs.
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Male 2,592
Looks like some 80`s movie special effect. Pretty awesome. Sounds like that guy from EEVBlog
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Male 2,700
this is a decent way to show science....The electric arcs are actually removing the metal from BEWTEEN the plastic CD layers leave not a single scorch mark....I wonder if there are any practicle applications for this?
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Male 535
i just throw it in the trash
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Male 360
yeah, it`s trash. microwaving cds is fun though.
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Male 559
It`s not erasing it, it is removing the aluminum from the inside of it. It is effectively destroying it. This CD isn`t erased, it`s broken.
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Female 177
What`s the point
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Female 120
Microwave. Done.
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Male 3,081
The easiest way to erase a CD or any other media is to give it to my girlfriend and say `hey, keep this safe`.

guaranteed the data will be completely lost for good within the day.

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Male 15,510
Its alive! ITS ALIVE!
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Male 172
Lol 0:25 "CD..ERIZED"
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Male 997
Anyone else remember the broken with Kevin Rose, made a laptop with a Thermite booby trap switch. That`s how you wipe the hard drive so no one can read it at all.
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Male 773
@bacon_pie...i see what you did there.
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Male 25,416
Cool, but imagine the electricity bill. i preferred snapping but meh...
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Male 1,243
Drill holes in a hard disk and the chances of getting data from it are minimal and would require very sophisticated hardware and software as well as technical skill. Snap a CD and again the data is practically irretrievable and no amount of high resolution photos will work as the disk will fragment. With a writeable CD the emulsion will disintegrate and fragment to a point where it is impossible to retrieve data.
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Male 3,061
mp3 is the easiest way to erase a cd
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Male 5,094
Hard disks are metal and won`t melt in ordinary fire.
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Male 217
TiredofNicks: No, I`m pretty sure if you "drill holes in the disks and throw it in a fire" the data is gone forever. Especially the fire part. If the disks melt, it`s all over.
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Male 5,094
GasMaskKid: auburn is actually right, even if you format a hard drive, drill holes in the discs and throw it in a fire there are methods of recovering data with surprisingly high accuracy.

The only way to completely "kill" the information on a hard drive is to either EMP the poo out of it or have a program repeatedly overwrite it with random data.
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Male 10,339
I was saying snapped CD`s are easy.
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Male 5,094
auburnjunky: Snapped CDs are easy, either just laminate a new disc on the top of the pieces, or take a very high-res photo of the surface and let a computer decode it. If you want tocompletely destroy a CD, you have to melt the plastic layer.
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Male 694
auburnjunky, you`re taking Bones too seriously. Although, you probably could read a CD in halves...
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Male 3,430
I wonder what else I can "erase"?
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Male 409
There is no way there is any usable information on this disc.
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Male 10,339
@lazyme: I don`t know specifically, but if law enforcement can recover data from a hard disk that has been melted in a fire, then I`m sure they can get some information off a Disc that has been simply broken in half.
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Male 409
The reflective layer on CDs is aluminum (the information is encoded by pinholes in that layer). I assume it is cooking off the aluminum.

This likely would not work with a writable CD, since the layer isn`t always metal.
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Male 588
I call hoax!
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Male 10,440
[quote] It`s still partially readable if it`s just broken. [/quote]

Care to suggest how that could be done?
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Male 1,511
The CD information is actually embedded in the plastic (on production CDs). He is just removing the reflective surface, which, if you really wanted could be reapplied to get all of the CD information.
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Male 69
How it works: 9v battery is for the motor to spin the CD, CD has conductive layer (where the data is stored) 2 coils get powered up, electricity always follows the path of least resistance, so it starts with the outer layer of the CD, since the surface is more conductive than air or plastic, as it spins, the data layer vapourizes (don`t breathe it!)
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Female 9,402
Cool, but the noise really bothered my ears.
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Male 10,339
"or you could break it in half"

It`s still partially readable if it`s just broken. If you want to truly destroy the information, this is a nice, quick way to do it.
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Male 183
How it works? There is a very thin layer of metal sandwiched in every cd. That is what is conducting the voltage. This a rather final solution.
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Male 217
He used high current to vaporize the aluminum coating on the outside of the CS. Thus, all that`s left is the clear plastic.
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Male 408
or you could break it in half
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Male 10,339
@Jack: This would be a good tool for hackers/pirates who are getting raided.
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Female 812
Is it ReWritable?
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Male 10,339
True Madest. I wonder how much longer Discs have left?
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Male 45
it should be "this is how you destroy a CD"
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Male 7,378
Invented this just in time for it`s demise.
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Male 96
this is clearly the work of god, the lightening gives it away.
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Male 10,339
Oh and welcome back, fellow cat hater.
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Male 10,339
They should put a cat in there.
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Male 24
Uses an electrical arc to damage the top surface of the disc, where the information is stored.
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Male 2,050
WB Pmarren
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Male 4,594
Link: Coolest Way To Erase A CD [Rate Link] - But does anyone know how it works exactly?
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