DISK_INT13_INFO - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ntdddisk.h

typedef struct _DISK_INT13_INFO {
  USHORT DriveSelect;
  ULONG  MaxCylinders;
  USHORT SectorsPerTrack;
  USHORT MaxHeads;
  USHORT NumberDrives;
} DISK_INT13_INFO, *PDISK_INT13_INFO;

View the official Windows Driver Kit DDI reference
// winioctl.h

typedef struct _DISK_INT13_INFO {
  WORD  DriveSelect;
  DWORD MaxCylinders;
  WORD  SectorsPerTrack;
  WORD  MaxHeads;
  WORD  NumberDrives;
} DISK_INT13_INFO, *PDISK_INT13_INFO;

View the official Win32 API reference

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Windows Driver Kit DDI reference (ns-ntdddisk-_disk_int13_info)

_DISK_INT13_INFO structure

Description

The DISK_INT13_INFO structure is used by the BIOS to report disk detection data for a partition with an INT13 format.

Members

DriveSelect

Corresponds to the Device/Head register defined in the AT Attachment (ATA) specification. When zero, the fourth bit of this register indicates that drive zero is selected. When 1, it indicates that drive one is selected. The values of bits 0, 1, 2, 3, and 6 depend on the command in the command register. Bits 5 and 7 are no longer used. For more information about the values that the Device/Head register can hold, see the ATA specification.

MaxCylinders

Indicates the maximum number of cylinders on the disk.

SectorsPerTrack

Indicates the number of sectors per track.

MaxHeads

Indicates the maximum number of disk heads.

NumberDrives

Indicates the number of drives.

See also

DISK_DETECTION_INFO

DISK_EX_INT13_INFO

View the official Windows Driver Kit DDI reference

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Win32 API reference (ns-winioctl-disk_int13_info)

DISK_INT13_INFO structure

Description

Contains standard Int13 drive geometry parameters.

Members

DriveSelect

The letter that is related to the specified partition or hard disk. For valid values, see the BIOS documentation.

MaxCylinders

The maximum number of cylinders per head. For valid values, see the BIOS documentation.

SectorsPerTrack

The number of sectors per track. For valid values, see the BIOS documentation.

MaxHeads

The maximum number of heads for this hard disk. For valid values, see the BIOS documentation.

NumberDrives

The number of drives. For valid values, see the BIOS documentation.

See also

DISK_DETECTION_INFO

View the official Win32 API reference

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