{
  "DeviceName": "/dev/sda1",
  "Ebs": {
    "Status": "attached",
    "DeleteOnTermination": false,
    "VolumeSize": 1024
  }
}
{
  "DeviceName": "/dev/sda1",
  "Ebs": {
    "Status": "attached",
    "DeleteOnTermination": true,
    "VolumeSize": 1024
  }
}

Set delete on terminate to true
Set delete on terminate to true