Definition: Invalid files


Artificial files, incorrectly created by automatic recovery utilities like Chkdsk, Scandisk, Vrepair, Norton Disk Doctor, and many others. The content of such files do not normally have any value. This is because it may contain only a fragment of the data of the original file, or it may contain fragments of several files.




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Data Recovery Fact

Platter

The actual storage media in the different types of disks. In a hard drive the platter haa a core of glass or aluminium covered with a thin layer of Ferric oxide or a Cobalt alloy (Co-Ni, Co-Cr, Co-Ni-W). This layer is protected by a layer of a very hard material (overcoat), and a thin layer of lubricant. A CD is a plastic disc in which the data is impressed. It has a metallic, reflecting backside.

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