4.2 on reservations Sector

     In the FAT file system DBR offset 0x0E Department, with the number of two-byte sector storage reservations.The so-called reserved sectors (sometimes called systems sector, the hidden sector), refers to all sectors is only the beginning of the system from the partition DBR sector, including the DBR sector. In the FAT16 file system, data is usually reserved sector is set to 1, that is just DBR sector. In FAT32, leave the sector data is usually taken as 32, sometimes with Partition Magic points over the FAT32 partition will be set 36 reserved sectors, some tools may be set 63 reserved sectors. 
     FAT32 reserved sectors in addition to the total disk sector 0 is used as DBR, a total second sector (win98 systems) or total section 0xC sector (win2000, winxp) as an OS boot code extension, the rest of the sector are operating system is not involved in the management and disk data management, usually the case is not the role. The reason why the operating system is set to retain the sector in FAT32 in order to DBR for backup or upgrade until later use. FAT32 in, DBR offset 0x34 2 bytes of data indicates the sector where the DBR backup, usually 0x06, ie 6 sectors. When the FAT32 partition DBR sector is damage caused partition inaccessible. Backup can be used to replace the original 6th sector sector 0 to retrieve the data.