Parallels errors while creating floppy disk GH-1225

Patch applied with modifications - tests updated to pass.

builder/parallels/common/step_attach_floppy.go

@@ -33,15 +33,25 @@ func (s *StepAttachFloppy) Run(state multistep.StateBag) multistep.StepAction {
 	ui := state.Get("ui").(packer.Ui)
 	vmName := state.Get("vmName").(string)
 
+	ui.Say("Deleting any current floppy disk...")
+	// Delete the floppy disk controller
+	del_command := []string{
+		"set", vmName,
+		"--device-del", "fdd0",
+	}
+	if err := driver.Prlctl(del_command...); err != nil {
+		state.Put("error", fmt.Errorf("Error deleting floppy: %s", err))
+	}
 	ui.Say("Attaching floppy disk...")
 
 	// Create the floppy disk controller
-	command := []string{
+	add_command := []string{
 		"set", vmName,
 		"--device-add", "fdd",
 		"--image", floppyPath,
+		"--connect",
 	}
-	if err := driver.Prlctl(command...); err != nil {
+	if err := driver.Prlctl(add_command...); err != nil {
 		state.Put("error", fmt.Errorf("Error adding floppy: %s", err))
 		return multistep.ActionHalt
 	}

builder/parallels/common/step_attach_floppy_test.go

@@ -36,17 +36,30 @@ func TestStepAttachFloppy(t *testing.T) {
 		t.Fatal("should NOT have error")
 	}
 
-	if len(driver.PrlctlCalls) != 1 {
+	if len(driver.PrlctlCalls) != 2 {
 		t.Fatal("not enough calls to prlctl")
 	}
 
 	if driver.PrlctlCalls[0][0] != "set" {
 		t.Fatal("bad call")
 	}
-	if driver.PrlctlCalls[0][2] != "--device-add" {
+	if driver.PrlctlCalls[0][2] != "--device-del" {
 		t.Fatal("bad call")
 	}
-	if driver.PrlctlCalls[0][3] != "fdd" {
+	if driver.PrlctlCalls[0][3] != "fdd0" {
+		t.Fatal("bad call")
+	}
+
+	if driver.PrlctlCalls[1][0] != "set" {
+		t.Fatal("bad call")
+	}
+	if driver.PrlctlCalls[1][2] != "--device-add" {
+		t.Fatal("bad call")
+	}
+	if driver.PrlctlCalls[1][3] != "fdd" {
+		t.Fatal("bad call")
+	}
+	if driver.PrlctlCalls[1][6] != "--connect" {
 		t.Fatal("bad call")
 	}
 }