code: func (this *MBRPartition) GetLBALast() uint32 {
  	last := uint64(this.GetLBAStart()) + uint64(this.GetLBALen()) - 1
  
  	// If last > max uint32 - panic
  	if last > uint64(0xFFFFFFFF) {
  		panic(errors.New("Overflow while calc last sector. Max sector number in mbr must be less or equal 0xFFFFFFFF"))
  	}
  	return uint32(last)
  }
docs: /*
  Return number of last setor if partition.
  
  If last sector num more then max uint32 - panic. It mean error in metadata.
  */