![]() Each track is subdivided into sectors, which typically holds 512 bytes of data. To understand how hex editors can work, you need to know that all information saved on a hard disk gets recorded in tracks, which are concentric rings on the surface of each hard disk platter, like the rings in a tree trunk. ![]() Hex editors are often used to crack copy-protected software, study how computer viruses work, or in the case of forensics, identify and retrieve information that can't normally be accessed by the operating system. A hex editor allows you to peek at the physical contents stored on a disk, regardless of the boundaries of files, directories, or partitions. If the suspect has deleted files and has overwritten them on his or her hard disk, you can always use a hex editor to view any data stored in (or deleted from) both files and disk sectors.
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