diff --git a/TwlBkpCheck/Windows/TWLBackupBlock/Blocks.cs b/TwlBkpCheck/Windows/TWLBackupBlock/Blocks.cs
index bd424d2..22d787c 100644
--- a/TwlBkpCheck/Windows/TWLBackupBlock/Blocks.cs
+++ b/TwlBkpCheck/Windows/TWLBackupBlock/Blocks.cs
@@ -3,20 +3,28 @@ using System.Diagnostics;
 
 namespace TwlBackupBlock
 {
+    public enum BkpType
+    {
+        NORMAL,
+        WITH_PRIVATE_SAVE,
+        LEGACY
+    };
+
     /// <summary>
     /// ブロックの集合です。
     /// </summary>
     public class Blocks : ICloneable
     {
-        private const int NUM_BLOCKS = 14;
+        private const int NUM_BLOCKS = 15;
 
         public Block banner;
         public Block header;
         public Block signature;
         public Block tmd;
         public Block[] content;
-        public Block saveData;
+        public Block publicSave;
         public Block subBanner;
+        public Block privateSave;
 
         /// <summary>
         /// Blocksクラスの新しいインスタンスを初期化します。
@@ -32,8 +40,9 @@ namespace TwlBackupBlock
             {
                 content[i] = new Block();
             }
-            saveData = new Block();
+            publicSave = new Block();
             subBanner = new Block();
+            privateSave = new Block();
         }
 
         /// <summary>
@@ -57,8 +66,9 @@ namespace TwlBackupBlock
                         case 1: return header;
                         case 2: return signature;
                         case 3: return tmd;
-                        case 12: return saveData;
+                        case 12: return publicSave;
                         case 13: return subBanner;
+                        case 14: return privateSave;
                         default:
                             Debug.Assert(false);
                             return null; // never reach
@@ -96,8 +106,12 @@ namespace TwlBackupBlock
                     newBlocks.content[i] = (Block)content[i].Clone();
                 }
             }
-            newBlocks.saveData = (Block)saveData.Clone();
+            newBlocks.publicSave = (Block)publicSave.Clone();
             newBlocks.subBanner = (Block)subBanner.Clone();
+            if (privateSave.body != null)
+            {
+                newBlocks.privateSave = (Block)privateSave.Clone();
+            }
             return newBlocks;
         }
     }