What allows you to delete files from hard drive disk, but you can't from a cd/dvd? (read for more info)

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The difference is a hard drive stores data with tiny magnetic charges. These charges can be changed to reflect if data is stored at a particular point or not. CDs and DVDs have the data physically burned into them by a laser. In some cases, discs were made that can be re-written, but there is a very low limit on how many times you can do this. You can only burn holes in something so many times before it's destroyed.
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JohnPMyers

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The difference is a hard drive stores data with tiny magnetic charges. These charges can be changed to reflect if data is stored at a particular point or not. CDs and DVDs have the data physically burned into them by a laser. In some cases, discs were made that can be re-written, but there is a very low limit on how many times you can do this. You can only burn holes in something so many times before it's destroyed.
 
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PedramCarter

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Dec 8, 2013
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Exactly what I was looking for, I know dvd/cd can be r/w too, but this was the answer thanks.
 
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