DRIVE_LAYOUT_INFORMATION structure (ntdddisk.h)
The DRIVE_LAYOUT_INFORMATION structure is obsolete and is provided only to support existing drivers.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.
Syntax
typedef struct _DRIVE_LAYOUT_INFORMATION {
ULONG PartitionCount;
ULONG Signature;
PARTITION_INFORMATION PartitionEntry[1];
} DRIVE_LAYOUT_INFORMATION, *PDRIVE_LAYOUT_INFORMATION;
Members
PartitionCount
Contains the number of partitions on the drive.
Signature
Contains the disk signature.
PartitionEntry[1]
Contains a variable-length array of PARTITION_INFORMATION structures, one for each partition on the drive.
Remarks
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.
Requirements
| Requirement | Value |
|---|---|
| Header | ntdddisk.h (include Ntdddisk.h) |