If possible, a computer will store files in contiguous clusters ... the new version doesn’t completely cover up the old. The leftover data can be read out with certain imaging techniques ...

This tutorial will cover the most common image formats ... every bit of information contained on a CD or DVD into a file on your computer. This file can then be made available for download so ...

A computer file is a block of arbitrary information, or resource for storing information, which is available to a computer program and is usually based on some kind of durable storage.