<div class="content"><p>The <b>CprepDiskOnline</b> method begins the transition of a
<b>ClusPrepDisk.OnlineState</b> to Online and then waits for the transition to
complete.</p><dl>
<dd>
<div><pre> HRESULT CprepDiskOnline(
   [in] CPREP_DISKID DiskId,
   [out] unsigned long* MaxPartitionNumber
 );
</pre></div>
</dd></dl><p><b>DiskId: </b>The identifier of the <b>ClusPrepDisk</b>
representing the disk whose associated volumes will become <a href="b30bcd1c-8ff6-46d2-a27e-61bd85ace9f4#gt_783ae2e4-7c04-40ba-a974-f95a30aa1ab2" data-linktype="relative-path">online</a>.</p><p><b>MaxPartitionNumber: </b> The number of partitions
on the disk.</p><p><b>Return Values: </b> A signed 32-bit value that
indicates return status. If the method returns a negative value, it has failed.
Zero or positive values indicate success, with the lower 16 bits in positive
nonzero values containing warnings or flags defined in the method
implementation. For more information about Win32 error codes and <a href="../ms-dtyp/a9046ed2-bfb2-4d56-a719-2824afce59ac" data-linktype="relative-path">HRESULT</a>
values, see <a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a>
sections <a href="../ms-erref/18d8fbe8-a967-4f1c-ae50-99ca8e491d2d" data-linktype="relative-path">2.2</a>
and <a href="../ms-erref/0642cb2f-2075-4469-918c-4441e69c548a" data-linktype="relative-path">2.1</a>.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>0x00000000</p>
  <p>S_OK</p>
  </td>
  <td>
  <p>The call was successful.</p>
  </td>
 </tr><tr>
  <td>
  <p>0x80070002</p>
  <p>ERROR_FILE_NOT_FOUND</p>
  </td>
  <td>
  <p>The disk was not found.</p>
  </td>
 </tr><tr>
  <td>
  <p>0x8007139F</p>
  <p>ERROR_INVALID_STATE</p>
  </td>
  <td>
  <p>The value of <b>ClusPrepDisk.OwnedState</b> is not
  equal to OwnedByThisServer.</p>
  </td>
 </tr><tr>
  <td>
  <p>0x80070548</p>
  <p>ERROR_INVALID_SERVER_STATE</p>
  </td>
  <td>
  <p>The server&#39;s <b>Prepare State</b> is not Online.</p>
  </td>
 </tr></tbody></table>
</dd>
<dd>
<p>For any other condition, this method MUST return a
value that is not one of the values listed in the preceding table. The client
MUST behave in one consistent, identical manner for all values that are not
listed in the preceding table.</p>
</dd></dl><p>Exceptions Thrown: No exceptions are thrown beyond those
thrown by the underlying <a href="b30bcd1c-8ff6-46d2-a27e-61bd85ace9f4#gt_8a7f6700-8311-45bc-af10-82e10accd331" data-linktype="relative-path">RPC</a>
protocol <a href="../ms-rpce/290c38b1-92fe-4229-91e6-4fc376610c15" data-linktype="relative-path">[MS-RPCE]</a>.</p><p>The opnum field value for this method is 13.</p><p>When processing this call, the server MUST do the following:
</p><ul><li><p><span><span> 
</span></span>Obtain the <b>ClusPrepDisk</b> identified by the <i>DiskId</i>
parameter as specified in section <a href="c17ce220-d244-45c9-95c0-4c31942253ee" data-linktype="relative-path">3.2.4</a>.</p>
</li><li><p><span><span> 
</span></span>Start the online process in the same way that <a href="cf8ac20d-82d6-4fa3-8818-61a3242f66da" data-linktype="relative-path">CprepDiskSetOnline</a> does.</p>
</li><li><p><span><span> 
</span></span>Wait for the implementation-specific process where volumes on the
disk become online, to complete.</p>
</li><li><p><span><span> 
</span></span>If the online process is successful, then count the number of
partitions on the disk.</p>
</li><li><p><span><span> 
</span></span>Set <b>ClusPrepDisk.OnlineState</b> to Online.</p>
</li></ul><p>The server returns the following information to the client:</p><ul><li><p><span><span> 
</span></span>The number of partitions on the disk</p>
</li></ul><p>If the <b>ClusPrepDisk.OnlineState</b> was already Online,
then the online process is not performed and the method returns S_OK.</p></div>