DRIVE_LAYOUT_INFORMATION - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ntdddisk.h
typedef struct _DRIVE_LAYOUT_INFORMATION {
ULONG PartitionCount;
ULONG Signature;
PARTITION_INFORMATION PartitionEntry[1];
} DRIVE_LAYOUT_INFORMATION, *PDRIVE_LAYOUT_INFORMATION;
View the official Windows Driver Kit DDI reference// winioctl.h
typedef struct _DRIVE_LAYOUT_INFORMATION {
DWORD PartitionCount;
DWORD Signature;
PARTITION_INFORMATION PartitionEntry[1];
} DRIVE_LAYOUT_INFORMATION, *PDRIVE_LAYOUT_INFORMATION;
View the official Win32 API referenceNo description available.
The DRIVE_LAYOUT_INFORMATION structure is obsolete and is provided only to support existing drivers. New drivers must use DRIVE_LAYOUT_INFORMATION_EX.
The DRIVE_LAYOUT_INFORMATION structure is used to report information about a disk drive and its partitions. It is also used to write new drive layout information to the disk.
PartitionCountContains the number of partitions on the drive.
SignatureContains the disk signature.
PartitionEntryContains a variable-length array of PARTITION_INFORMATION structures, one for each partition on the drive.
In Windows 2000 and later operating systems, disk drivers should use structures DRIVE_LAYOUT_INFORMATION_EX and PARTITION_INFORMATION_EX along with routines IoReadPartitionTableEx and IoSetPartitionInformationEx to read and alter partition information on the disk.
Contains information about the partitions of a drive.
[!NOTE] DRIVE_LAYOUT_INFORMATION is superseded DRIVE_LAYOUT_INFORMATION_EX structure.
PartitionCountThe number of partitions on a drive.
On disks with the MBR layout, this value is always a multiple of 4. Any partitions that are unused have a partition type of PARTITION_ENTRY_UNUSED (0).
SignatureThe drive signature value.
PartitionEntryA variable-sized array of PARTITION_INFORMATION structures, one structure for each partition on a drive.
DRIVE_LAYOUT_INFORMATION_EX, IOCTL_DISK_GET_DRIVE_LAYOUT, IOCTL_DISK_SET_DRIVE_LAYOUT