NTFS_EXTENDED_VOLUME_DATA structure (ntifs.h)
The NTFS_EXTENDED_VOLUME_DATA structure contains extended information about an NTFS volume. It's used with the FSCTL_GET_NTFS_VOLUME_DATA control code.
Syntax
typedef struct {
ULONG ByteCount;
USHORT MajorVersion;
USHORT MinorVersion;
ULONG BytesPerPhysicalSector;
USHORT LfsMajorVersion;
USHORT LfsMinorVersion;
ULONG MaxDeviceTrimExtentCount;
ULONG MaxDeviceTrimByteCount;
ULONG MaxVolumeTrimExtentCount;
ULONG MaxVolumeTrimByteCount;
} NTFS_EXTENDED_VOLUME_DATA, *PNTFS_EXTENDED_VOLUME_DATA;
Members
ByteCount
Total bytes of the structure.
MajorVersion
Major version for an NTFS volume.
MinorVersion
Minor version for an NTFS volume.
BytesPerPhysicalSector
Number of bytes per physical sector on the device.
LfsMajorVersion
Major version of the Log File Service (LFS) used by NTFS.
LfsMinorVersion
Minor version of the LFS used by NTFS.
MaxDeviceTrimExtentCount
Maximum number of trim extents that the device can handle in a single trim operation.
MaxDeviceTrimByteCount
Maximum number of bytes that can be trimmed in a single device trim operation.
MaxVolumeTrimExtentCount
Maximum number of trim extents that the volume can handle in a single trim operation.
MaxVolumeTrimByteCount
Maximum number of bytes that can be trimmed in a single volume trim operation.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP |
| Header | ntifs.h |