How to read the sectors of physical drive under win32? The API ReadFile is most useful function, and with it, you can read the physical sectors directly. Here is a sample function, BOOL ReadSectors(…) BOOL ReadSectors( BYTE bDrive, //drive index DWORD dwStartSector, //start sector WORD wSectors, //sectors number LPBYTE lpSectBuff) { 　if (bDrive == 0)