// wdm.h

typedef struct _CM_INT13_DRIVE_PARAMETER {
  USHORT DriveSelect;
  ULONG  MaxCylinders;
  USHORT SectorsPerTrack;
  USHORT MaxHeads;
  USHORT NumberDrives;
} CM_INT13_DRIVE_PARAMETER, *PCM_INT13_DRIVE_PARAMETER;
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Windows Driver Kit DDI reference (ns-wdm-_cm_int13_drive_parameter)

_CM_INT13_DRIVE_PARAMETER structure

Description

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.

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.

CM_INT13_DRIVE_PARAMETER - NtDoc