diff --git a/bin/checkDataIntegrity/Main.class b/bin/checkDataIntegrity/Main.class
index 26d8031..404ccc9 100644
Binary files a/bin/checkDataIntegrity/Main.class and b/bin/checkDataIntegrity/Main.class differ
diff --git a/checkDataIntegrity.jar b/checkDataIntegrity.jar
index c1a3e62..2309cc9 100644
Binary files a/checkDataIntegrity.jar and b/checkDataIntegrity.jar differ
diff --git a/src/checkDataIntegrity/Main.java b/src/checkDataIntegrity/Main.java
index 5b3f621..600f624 100644
--- a/src/checkDataIntegrity/Main.java
+++ b/src/checkDataIntegrity/Main.java
@@ -24,12 +24,12 @@ public class Main {
 		final long start = System.currentTimeMillis();
 		final AtomicLong count = new AtomicLong();
 		final AtomicLong countErr = new AtomicLong();
-		final ThreadLocal<byte[]> bufs0 = ThreadLocal.withInitial(() -> new byte[4096]);
-		final ThreadLocal<byte[]> bufs1 = ThreadLocal.withInitial(() -> new byte[4096]);
+		final ThreadLocal<byte[]> bufs0 = ThreadLocal.withInitial(() -> new byte[8192]);
+		final ThreadLocal<byte[]> bufs1 = ThreadLocal.withInitial(() -> new byte[8192]);
 		
 		try (Stream<Path> walk = Files.walk(Path.of(path0))) {
 			walk
-//					.parallel()
+					.parallel()
 					.filter(Files::isRegularFile)
 					.forEach(p0 -> {
 						long cnt = count.incrementAndGet();
@@ -43,21 +43,25 @@ public class Main {
 						final byte[] buf0 = bufs0.get();
 						final byte[] buf1 = bufs1.get();
 						try (InputStream inputStream0 = Files.newInputStream(p0); InputStream inputStream1 = Files.newInputStream(p1);) {
-							final int len0 = inputStream0.read(buf0);
-							final int len1 = inputStream1.read(buf1);
-							if (len0 != len1) {
-								System.out.println(rel + ": Length mismatch");
-								countErr.incrementAndGet();
-								return;
-							}
-							if (len0 == -1) {
-								return;
-							}
-							if (!Arrays.equals(buf0, 0, len0, buf1, 0, len1)) {
-								System.out.println(rel + ": Data mismatch");
-								countErr.incrementAndGet();
-								return;
+							int len0, len1;
+							do {
+								len0 = inputStream0.read(buf0);
+								len1 = inputStream1.read(buf1);
+								if (len0 != len1) {
+									System.out.println(rel + ": Length mismatch");
+									countErr.incrementAndGet();
+									break;
+								}
+								if (len0 == -1) {
+									break;
+								}
+								if (!Arrays.equals(buf0, 0, len0, buf1, 0, len1)) {
+									System.out.println(rel + ": Data mismatch");
+									countErr.incrementAndGet();
+									break;
+								}
 							}
+							while (len0 > -1);
 						}
 						catch (NoSuchFileException nsfExc) {
 //							System.out.println(rel + ": NoSuchFileException");