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IOCTL_DISK_SET_PARTITION_INFO IOCTL (winioctl.h)

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Note

IOCTL_DISK_SET_PARTITION_INFO has been superseded by IOCTL_DISK_SET_PARTITION_INFO_EX, which retrieves layout information for AT and EFI (Extensible Firmware Interface) partitions.

Sets partition information for the specified disk partition.

To perform this operation, call the DeviceIoControl function with the following parameters.

BOOL DeviceIoControl(
  (HANDLE) hDevice,                 // handle to device
  IOCTL_DISK_SET_PARTITION_INFO,    // dwIoControlCode
  (LPVOID) lpInBuffer,              // input buffer 
  (DWORD) nInBufferSize,            // size of input buffer 
  NULL,                             // lpOutBuffer
  0,                                // nOutBufferSize
  (LPDWORD) lpBytesReturned,        // number of bytes returned
  (LPOVERLAPPED) lpOverlapped       // OVERLAPPED structure
);

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