Determine Disk Geometry on Windows

Question

I need to programmatically determine out how many sectors, heads, and cylinders are on a physical disk from Windows XP. Does anyone know the API for determining this? Where might Windows expose this information?

Answer 1

Use DeviceIoControl with control code IOCTL_DISK_GET_DRIVE_GEOMETRY or IOCTL_DISK_GET_DRIVE_GEOMETRY_EX.

There's sample code in MSDN to do this here.