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IOCTL_DISK_FORMAT_VOLUME (Compact 2013)

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3/26/2014

This I/O control message is issued to the FAT to be formatted to perform a high-level format of the volume. Send this message with DeviceIoControl.

Syntax

BOOL DeviceIoControl(
    HANDLE hDevice,           // handle to device
    DWORD dwIoControlCode,    // use IOCTL_DISK_FORMAT_VOLUME
    LPVOID lpInBuffer,        // pointer to input buffer
    DWORD nInBufferSize,      // input buffer size
    LPVOID lpOutBuffer,       // pointer to output buffer
    DWORD nOutBufferSize,     // output buffer size
    LPDWORD lpBytesReturned,  // number of bytes returned
    OVERLAPPED lpOverlapped   // pointer to OVERLAPPED structure
);

Parameters

  • hDevice
    The handle to the device.
  • dwIoControlCode
    [in] Control code for the operation. Use IOCTL_DISK_FORMAT_VOLUME for this operation.
  • lpInBuffer
    [in] Not used; set to NULL.
  • nInBufferSize
    [in] Not used; set to zero.
  • lpOutBuffer
    [out] Not used; set to NULL.
  • nOutBufferSize
    [out] Not used; set to zero.
  • lpBytesReturned
    [out] Pointer to a DWORD to receive the total number of bytes returned.
  • lpOverlapped
    Not used.

Return Values

Returns TRUE if successful; otherwise, returns FALSE.

Remarks

The following steps describe how to format a drive:

  1. Open a handle to the volume.
    The name of the volume to open has the format \FolderName\Vol:, where FolderName is the FAT file system name for the root directory of the mounted volume.

  2. Call the DeviceIoControl function with the volume handle and this I/O control.
    The following code example shows this procedure.

    hVolume = CreateFile(TEXT("\Storage Card\Vol:"), GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
DeviceIoControl(hVolume, IOCTL_DISK_FORMAT_VOLUME, NULL, 0, NULL, 0, NULL, NULL);

Requirements

Header

diskio.h

See Also

Reference

FAT File System I/O Controls

Other Resources

DeviceIoControl