Online materials:
End cluster: 0x0FFF FFFF
Bad cluster: 0 xFFFF FFF7
0 cluster: 0xF8FF FF0F
1 Cluster: 0 xFFFF FFFF or 0 xFFFF FF0F (Table 1 may be used to record dirty marks, indicating that the file system is not normally detached or the disk surface is incorrect. However
This value is not important. Under normal circumstances, the value of table 1 is "FFFFFFFF" or "ffff0f ")
Official materials:
The maximum size of the file system depends on the size of the FAT item. Each FAT item in the cluster chain records the cluster address of the next cluster. the number indicated by the FAT item has an upper limit, which is the maximum cluster number in the file system. The FAT item of the FAT32 file system only uses the 28bit (0x0FFF FFFF) of 32bit, so it can only describe 268435456 (that is, 0x1000 0000) clusters (actually less than this value, because this also includes reserved values used for ending and bad cluster labels)
My understanding:
Valid cluster number: 0x0000 0000 to 0x0FFF FFEF
Reserved cluster: 0x0FFF FFF0 to 0x0FFF FFF6
Bad cluster: 0x0FFF FFF7
End cluster of the file: 0x0FFF FFF8 to 0x0FFF FFFF