The TotalSectors property indicates the total number of sectors on the physical disk drive. Note: the value for this property ...

The TotalSectors property indicates the total number of sectors on the physical disk drive.  Note: the value for this property is obtained through extended functions of BIOS interrupt 13h. The value may be inaccurate if the drive uses a translation scheme to support high capacity disk sizes. Consult the manufacturer for accurate drive specifications.
Example: 2649024