title: How to change CD ROM Letter?
body: <p>I want to change letter from D to Z:</p>
  
  <pre><code>Set-WmiInstance -InputObject ( Get-WmiObject -Class Win32_volume -Filter "DriveLetter = 'd:'" ) -Arguments @{DriveLetter='Z:'}
  </code></pre>
  
  <p><strong>Error:</strong></p>
  
  <pre>Set-WmiInstance : Cannot bind argument to parameter 'InputObject' because it is
  null.
  At line:1 char:30
  + Set-WmiInstance -InputObject ( Get-WmiObject -Class Win32_volume -Filter "DriveL ...
  +                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      + CategoryInfo          : InvalidData: (:) [Set-WmiInstance], ParameterBindingValidationException
      + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.SetWmiInstance</pre>