title: Vagrant VirtualBox second disk path
body: <p>I have Vagrant + VirtualBox. </p>
  
  <p>In my Vagrantfile I have</p>
  
  <pre><code>config.vm.provider "virtualbox" do |v|
      v.customize [ "createhd", "--filename", "disk", "--size", 100000 ]
      v.customize [ 'storageattach', :id, '--storagectl', 'SATA Controller', '--port', 1, '--device', 0, '--type', 'hdd', '--medium', "disk"]
  end
  </code></pre>
  
  <p>When I fire up with vagrant up it looks for "disk" in 
  C:\HashiCorp\Vagrant\bin\disk</p>
  
  <pre><code>VBoxManage.exe: error: Could not find file for the medium 'C:\HashiCorp\Vagrant\bin\disk' (VERR_FILE_NOT_FOUND)
  </code></pre>
  
  <p>I would like the disk to live alongside the virtual machine's first disk in 
  C:\Users\jma47\VirtualBox VMs\bin_build_1389371691</p>
  
  <p>How can I do this in Vagrantfile?</p>