anchor.diff:  		for _, disk := range mi.SourceInstanceProperties.Disks {
   			if disk.Boot {
   				newdisk := &compute.AttachedDisk{
  -					Source:     disk.Source,
   					AutoDelete: disk.AutoDelete,
   					Type:       disk.Type,
   					DeviceName: disk.DeviceName,
  
positive.code: 		for _, disk := range mi.SourceInstanceProperties.Disks {
  			if !disk.Boot && disk.Type != "SCRATCH" {
  				newdisk := &compute.AttachedDisk{
  					Source:     disk.Source,
  					AutoDelete: disk.AutoDelete,
  					Type:       disk.Type,
  					DeviceName: disk.DeviceName,
  
negative.code: 		for _, disk := range mi.SourceInstanceProperties.Disks {
  			if disk.Type == "SCRATCH" {
  				newdisk := &compute.AttachedDisk{
  					AutoDelete: disk.AutoDelete,
  					Type:       disk.Type,
  					DeviceName: disk.DeviceName,
  