In the case of the root directory, the FAT table contains the number of the first cluster of each file in that directory. Reserved are special clusters used by the operating system.ĭirectories are described in the same table. Otherwise, it differentiates between unused and reserved clusters. For used clusters, each entry contains the number of the next cluster, or an end-of-file marker. The FAT table contains entries for each cluster. The FAT system divides the storage space into clusters. The main element of this file system is the File Allocation Table (FAT), which is allocated at formatting time. Usually, Microsoft doesn’t differentiate between the older versions, and refers to them as FAT. Originally, using 8 bits per entry, it has evolved into versions FAT12, FAT16 and FAT32, each using 12, 16 and 32 bits respectively. Microsoft promoted it through its DOS and Windows operating systems. This file system has been around since the 1980s. The FAT file system derives his name from its main component: the File Allocation Table. How do I recover data from a FAT file system
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