code: function Partition( device, options ) {
  
    if( !(this instanceof Partition) )
      return new Partition( device, options )
  
    this.device = device
  
    this.firstLBA = options.firstLBA || 0
    this.lastLBA = options.lastLBA || -1
  
    debug( 'new', this.firstLBA, this.lastLBA )
  
  }
docs: Partition Constructor
  @return {Partition}