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Technology Stocks : Compaq
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To: Night Writer who wrote (43439)1/13/1999 2:02:00 PM
From: TigerPaw  Read Replies (1) of 97611
 
The tech advised me of the following.
Once you write over a program, you can't recover it.

This is a different kind of damage which is more easily recoverable without special equipment (just use the unerase program from MSDOS).
The part of the file that was recovered was not really gone, just marked as gone (kind of like a file under windows that has been sent to the recycle icon but it hasn't been emptied yet).

Once a disk is formated, the data is gone
Not necessarily. There is a quick format process which keeps the old data there. New versions of format can sometimes be "unformatted".

Also there are some security programs called shredders ..
These are the ones which write over and over and over the data. It is like scribbling on a document that you don't want someone to read. If you do it enough you can't see any words for all the sribbles.
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