Hard disk main guidance sector = hard disk main boot record (MBR) hard disk partition table (DPT) ---------------------------------------------------------------------------------------------------------- ------------------------------- Physical location: 0 side 0 1 sector (Clindyer 0, Side 0, Sector 1) Size: 512 bytes where: MBR 446 bytes (0000--01BD), DPT 64 bytes (01Be - 011FD), end flag 2 byte (55 aa) function: MBR By checking DPT partition information boot system Jump to DBR; read: Use Norton DiskedIt, select Drive ??> Physical Disk-? Hard Disk in the Object menu, then select Disk Partition Table in the Object menu and use the Write in the Tools menu. The Object TO option is stored in the specified file backup; write: Use Norton Disked, select Drive ??> FLOOPY DISK in the Object menu, select the backup DPT file, then use the Write Object to ??> Physical Sector option in the Tools menu 001 (Clindyer 0, Side 0, Sector 1); Detailed: 000H - 08AH MBR Launcher (Looking for Power On Partition) 08BH - 0D9H MBR Start String 0DAH - 1BCH Reserved ("0") 1beh - 1FDH Hard Disk Partition Table 1FEH - 1ffH End Sign (55AA) Activity Partition main guiding sector (DBR) ------------------------ Physical location: 1 0 channels (CLINDYER 0, SIDE 1, SECTOR 1) Size: FAT16 1 sector 512 byte FAT32 3 sector 1536 byte function: including machine CMOS and other information (0000-0059), check this information and Guide the specified system file, such as NTLDR, etc. Read: Use Norton DiskeDit, select Drive ??> Logical Disk-? DISK C in the Object menu, then select Boot Record in the Object menu, and use Tools The Write Object To option in the menu is stored in the specified file backup; writing: use Norton Disked, in Obje In the CT menu, select Drive ??> FLOOPY DISK, select the backup DBR file, then use the Write Object to ??> Physical Sector option in the Tools menu (Clindyer 0, Side 1, Sector 1); detailed: 000H- -002H 3 BYTE Jump Directive (To start the program, jump to 03EH) 003H - 03DH BIOS parameter area 03EH - 19DH DOS launcher 19EH - 1E5H boot string 1E6H - 1FDH file name (IO.SYS, MSDOS .Sys) 1FEH - 1ffh End Mark (55AA) Hard Disk Partition Table (DPT) ------------------- Offset Address byte Number Meaning Analysis 01Be 1 Partition Type: 00 Represents an inactive partition: 80 represents an active partition; other invalid partitions. 01BF ~ 01C1 3 * Start addresses (face / sector / track), usually the start address of the first partition begins at 1 side 0 to 1 sector, so the three bytes should be 010100 01c2 1 # partition The type of operating system.
