Java tutorial
import java.io.File; public class PartitionSpace { public static void main(String[] args) { File[] roots = File.listRoots(); for (int i = 0; i < roots.length; i++) { System.out.println("Partition: " + roots[i]); System.out.println("Usable space on this partition = " + roots[i].getUsableSpace()); } } }