<div class="content"><p>The NTMS_DRIVETYPEINFORMATIONW structure describes the
properties specific to a type of <a href="8d988f06-72be-47cf-9e09-9060aa8ed897#gt_1112c690-ee01-4c9b-aa55-9569fd82178b" data-linktype="relative-path">drive</a>, in Unicode.</p><dl>
<dd>
<div><pre> typedef struct _NTMS_DRIVETYPEINFORMATIONW {
   [string] wchar_t szVendor[128];
   [string] wchar_t szProduct[128];
   DWORD NumberOfHeads;
   DWORD DeviceType;
 } NTMS_DRIVETYPEINFORMATIONW;
</pre></div>
</dd></dl><p><b>szVendor:</b>   A null-terminated
sequence of Unicode UTF-16 characters specifying the name of the vendor of the
drive, acquired from device inquiry data. If this information is not available,
the member MUST specify an empty string.</p><p><b>szProduct:</b>   A null-terminated
sequence of Unicode UTF-16 characters specifying the name of the product of the
drive, acquired from device inquiry data. If this information is not available,
the member MUST specify an empty string.</p><p><b>NumberOfHeads:</b>  This parameter is
currently unused. It MUST be zero and MUST be ignored on receipt.</p><p><b>DeviceType:</b>  One of the following
SCSI device types <a href="https://go.microsoft.com/fwlink/?LinkId=90512" data-linktype="external">[ANSI-131-1994]</a>
acquired from device inquiry data. </p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Value</p>
   </th>
   <th>
   <p>Meaning</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>FILE_DEVICE_CD_ROM</p>
  <p>0x00000002</p>
  </td>
  <td>
  <p>Device is a CD-ROM.</p>
  </td>
 </tr><tr>
  <td>
  <p>FILE_DEVICE_DISK</p>
  <p>0x00000007</p>
  </td>
  <td>
  <p>Device is a direct-access drive.</p>
  </td>
 </tr><tr>
  <td>
  <p>FILE_DEVICE_DVD</p>
  <p>0x00000033</p>
  </td>
  <td>
  <p>Device is a DVD.</p>
  </td>
 </tr><tr>
  <td>
  <p>FILE_DEVICE_TAPE</p>
  <p>0x0000001F</p>
  </td>
  <td>
  <p>Device is a sequential-access drive.</p>
  </td>
 </tr></tbody></table>
</dd></dl><p> </p></div>