CM_INT13_DRIVE_PARAMETER structure (wdm.h)

The CM_INT13_DRIVE_PARAMETER structure defines a device-type-specific data record that is stored in the \Registry\Machine\Hardware\Description tree for a disk controller if the system can collect this information during the boot process.

Syntax

C++

typedef struct _CM_INT13_DRIVE_PARAMETER {
  USHORT DriveSelect;
  ULONG  MaxCylinders;
  USHORT SectorsPerTrack;
  USHORT MaxHeads;
  USHORT NumberDrives;
} CM_INT13_DRIVE_PARAMETER, *PCM_INT13_DRIVE_PARAMETER;

Members

DriveSelect

The drive selected value.

MaxCylinders

The maximum number of cylinders.

SectorsPerTrack

The number of sectors per track.

MaxHeads

The maximum number of heads.

NumberDrives

The number of drives.

Requirements

Requirement	Value
Header	wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)

See also

IoQueryDeviceDescription

IoReportResourceUsage