public void testExtremeFragmentation() {
System.out.println("NTFS : Test extreme fragmentation (" + TEST_IMAGE_FILENAME_1 + ").");
try {
File file = new File(TEST_IMAGE_FILENAME_1);
Device device = new FileDevice(file, "r");
FileSystem<?> fileSystem = new NTFSFileSystemType().create(device, true);
FSDirectory root = fileSystem.getRootEntry().getDirectory();
// Check the big file. Every byte should be readable as zero, hopefully.
FSFile bigFile = root.getEntry("bigfile.dat").getFile();
int increment = 1024 * 1024;