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IOCTL_DISK_CREATE_DISK control code

Initializes the specified disk and disk partition table using the information in the CREATE_DISK structure.

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


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

Parameters

hDevice

A handle to the disk device on which the information is to be set. To retrieve a device handle, call the CreateFile function.

dwIoControlCode

The control code for the operation. Use IOCTL_DISK_CREATE_DISK for this operation.

lpInBuffer

A pointer to a CREATE_DISK structure.

nInBufferSize

The size of the input buffer, in bytes.

lpOutBuffer

Not used with this operation; set to NULL.

nOutBufferSize

Not used with this operation; set to zero.

lpBytesReturned

A pointer to a variable that receives the size of the data stored in the output buffer, in bytes.

If lpOverlapped is NULL, lpBytesReturned cannot be NULL. Even when an operation returns no output data and lpOutBuffer is NULL, DeviceIoControl makes use of lpBytesReturned. After such an operation, the value of lpBytesReturned is meaningless.

If lpOverlapped is not NULL, lpBytesReturned can be NULL. If this parameter is not NULL and the operation returns data, lpBytesReturned is meaningless until the overlapped operation has completed. To retrieve the number of bytes returned, call GetOverlappedResult. If hDevice is associated with an I/O completion port, you can retrieve the number of bytes returned by calling GetQueuedCompletionStatus.

lpOverlapped

A pointer to an OVERLAPPED structure.

If hDevice was opened without specifying FILE_FLAG_OVERLAPPED, lpOverlapped is ignored.

If hDevice was opened with the FILE_FLAG_OVERLAPPED flag, the operation is performed as an overlapped (asynchronous) operation. In this case, lpOverlapped must point to a valid OVERLAPPED structure that contains a handle to an event object. Otherwise, the function fails in unpredictable ways.

For overlapped operations, DeviceIoControl returns immediately, and the event object is signaled when the operation has been completed. Otherwise, the function does not return until the operation has been completed or an error occurs.

Return value

If the operation completes successfully, DeviceIoControl returns a nonzero value.

If the operation fails or is pending, DeviceIoControl returns zero. To get extended error information, call GetLastError.

Remarks

When specifying a GUID partition table (GPT) as the PARTITION_STYLE of the CREATE_DISK structure, an application should wait for the MSR partition arrival before sending the IOCTL_DISK_SET_DRIVE_LAYOUT_EX control code. For more information about device notification, see RegisterDeviceNotification.

Requirements

Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	WinIoCtl.h (include Windows.h)

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