Flash Extractor
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Boot


Boot sector is located at first sector of partition. At the end of the boot sector is a 2-byte structure 55 AA also.

Boot sector can contain marks about using file system FAT, FAT16 or FAT32. But these marks are not so required.

To find boot sector using Hex Editor put FAT?? at search line.

General parameters for FAT boot:

The main fields for FAT 16 boot sector



The main fields for FAT 32 boot sector



Sector
Bytes per sector. (512, 1024, 2048 or 4096)
Generally 0x200 = 512

Cluster
Sectors per cluster

Reserved
Reserved sector count. The number of sectors before the first FAT.

N
Number of file allocation tables.
Almost always 2 for flash.

Root Size
The size of root catalog
Size = Root_Size * 32
Root_Size is not used for FAT32 system

Total Sectors
The number of sectors is used in file system.

Table Size
The size of one copy of FAT - the number of sectors in one copy of FAT
Last added
TC90535XBG   98 de 84 93   1x1 SM3271Q AC   45 3a 94 93   1x1 20-82-00469-2   45 49 9a b3   4x1 PS2251-39AC-E   98 d5 98 b2   1x1 PS2251-07-6   98 de 94 93   1x4 SM3268P-AB   45 3a 94 93   1x1 Monolith Micro SD_41   98 d7 94 32   2x2 Monolith SD_37   98 3a a8 92    1x1 SM3257EN Q AA   98 d7 98 92   1x1 SM2234H AC   ec d5 51 a6   4x2
News
11.11.2021 Legs for NR
16.08.2021 Sector Number Slow
15.07.2021 New drivers
21.05.2021 BGA-152 18x12 (smaller)
09.05.2021 Make FAT32 Root
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