PARTITION_INFORMATION_EX structure (winioctl.h)
Contains partition information for standard AT-style master boot record (MBR) and Extensible Firmware Interface (EFI) disks.
Syntax
typedef struct _PARTITION_INFORMATION_EX {
PARTITION_STYLE PartitionStyle;
LARGE_INTEGER StartingOffset;
LARGE_INTEGER PartitionLength;
DWORD PartitionNumber;
BOOLEAN RewritePartition;
BOOLEAN IsServicePartition;
union {
PARTITION_INFORMATION_MBR Mbr;
PARTITION_INFORMATION_GPT Gpt;
} DUMMYUNIONNAME;
} PARTITION_INFORMATION_EX, *PPARTITION_INFORMATION_EX;
Members
PartitionStyle
The format of the partition. For a list of values, see PARTITION_STYLE.
StartingOffset
The starting offset of the partition.
PartitionLength
The size of the partition, in bytes.
PartitionNumber
The number of the partition (1-based).
RewritePartition
If this member is TRUE, the partition is rewritable. The value of this parameter should be set to TRUE.
IsServicePartition
DUMMYUNIONNAME
DUMMYUNIONNAME.Mbr
A PARTITION_INFORMATION_MBR structure that specifies partition information specific to master boot record (MBR) disks. The MBR partition format is the standard AT-style format.
DUMMYUNIONNAME.Gpt
A PARTITION_INFORMATION_GPT structure that specifies partition information specific to GUID partition table (GPT) disks. The GPT format corresponds to the EFI partition format.
Remarks
If the partition is on a disk formatted as type master boot record (MBR), partition size totals are limited. For more information, see the Remarks section of IOCTL_DISK_SET_DRIVE_LAYOUT.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | winioctl.h (include Windows.h) |
See also
IOCTL_DISK_GET_PARTITION_INFO_EX