Ejercidio: añadir disco adicional

Vagrant.configure(2) do |config|
  config.vm.box = "debian/jessie64"
  config.vm.hostname = "prueba1"
  config.vm.network "forwarded_port", guest: 80, host: 8080
  config.vm.provider "virtualbox" do |vb|
    vb.name = "prueba1-vm"
    vb.memory = "512"
    vb.cpus = 2
    vb.linked_clone = true
  end
  config.vm.provider "virtualbox" do |vb|
    file_to_disk = 'tmp/disk.vdi'
    unless File.exist?(file_to_disk)
      vb.customize ['createhd', 
                     '--filename', file_to_disk, 
                     '--size', 500 * 1024]
    end
    vb.customize ['storageattach', :id, 
                   '--storagectl', 'SATA Controller', 
                   '--port', 1, 
                   '--device', 0, 
                   '--type', 'hdd', 
                   '--medium', file_to_disk]
  end
end