Every time you eliminate a file from your harddisk, it may seem as if it is gone for good. Actually this isn't the case. The seemingly permanent process of file deletion actually leaves the file still on the hard disk. Whenever a file is erased, it is simply marked as ‘deleted', and the space that it occupies on the drive is accordingly marked as ‘ready for use'. Hence, it may be overwritten anytime more disk space is required, but this is by no means certain, except if the whole disc drive is full.
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