title: Resizing disk space on vagrant box
body: <p>I'd like to give my box some more disk space. I'm trying to do this through the vagrantfile as follows:</p>
  
  <pre><code>Vagrant::Config.run do |config|
      # ..
      config.vm.customize ["modifyvm", :id, "--memory", 1024]
      config.vm.customize ["modifyhd", :id, "--resize", 4096]
  end
  </code></pre>
  
  <p>This gives me the error:</p>
  
  <pre><code>A customization command failed:
  ["modifyhd", "e87d8786-88be-4805-9c2a-45e88b8e0e56", "--resize", "4096"]
  
  The following error was experienced:
  
  VBoxManage: error: The given path 'e87d8786-88be-4805-9c2a-45e88b8e0e56' is not fully qualified
  VBoxManage: error: Details: code VBOX_E_FILE_ERROR (0x80bb0004), component Medium, interface IMedium, callee nsISupports
  VBoxManage: error: Context: "OpenMedium(Bstr(pszFilenameOrUuid).raw(), enmDevType, enmAccessMode, fForceNewUuidOnOpen, pMedium.asOutParam())" at line 178 of file VBoxManageDisk.cpp
  
  
  Please fix this customization and try again.
  </code></pre>
  
  <p>I'm trying to piece the information together from <a href="http://docs.vagrantup.com/v1/docs/config/vm/customize.html">http://docs.vagrantup.com/v1/docs/config/vm/customize.html</a>
  <a href="http://www.virtualbox.org/manual/ch08.html#vboxmanage-modifyvdi">http://www.virtualbox.org/manual/ch08.html#vboxmanage-modifyvdi</a></p>