diff --git a/branches/work/VerificationFailed/sources/ConsoleBackup/Exporter.cpp b/branches/work/VerificationFailed/sources/ConsoleBackup/Exporter.cpp
index b7e6470..3fc9a1a 100644
--- a/branches/work/VerificationFailed/sources/ConsoleBackup/Exporter.cpp
+++ b/branches/work/VerificationFailed/sources/ConsoleBackup/Exporter.cpp
@@ -46,6 +46,7 @@
 #include "Aes_define.h"
 #include "VersionDetect.h"
 #include "Util.h"
+#include "HeapChecker.h"
 
 namespace ConsoleBackup
 {
@@ -778,6 +779,15 @@ void ExportThreadFunc()
     void* buf = writeHeap.GetAddr();
     if (buf != NULL)
     {
+        NN_LOG("HeapCheck Start : %lld\n", nn::os::Tick::GetSystemCurrent().ToTimeSpan().GetMilliSeconds());
+        HeapChecker heapChecker;
+        result = heapChecker.Check(buf, bufSize);
+        if(result.IsFailure())
+        {
+            s_IsExportSucceeded = false;
+            return;
+        }
+        NN_LOG("HeapCheck End : %lld\n", nn::os::Tick::GetSystemCurrent().ToTimeSpan().GetMilliSeconds());
         nn::fs::FileOutputStream list;
         result = list.TryInitialize(common::FILE_LIST_PATHNAME, true);
         COMMON_LOGGER_RESULT_IF_FAILED_WITH_LINE(result);
diff --git a/branches/work/VerificationFailed/sources/ConsoleBackup/HeapChecker.cpp b/branches/work/VerificationFailed/sources/ConsoleBackup/HeapChecker.cpp
new file mode 100644
index 0000000..754fe6c
--- /dev/null
+++ b/branches/work/VerificationFailed/sources/ConsoleBackup/HeapChecker.cpp
@@ -0,0 +1,79 @@
+/*---------------------------------------------------------------------------*
+ Project:  Horizon
+ File:     HeapChecker.cpp
+
+ Copyright 2009-2011 Nintendo.  All rights reserved.
+
+ These coded instructions, statements, and computer programs contain
+ proprietary information of Nintendo of America Inc. and/or Nintendo
+ Company Ltd., and are protected by Federal copyright law.  They may
+ not be disclosed to third parties or copied or duplicated in any form,
+ in whole or in part, without the prior written consent of Nintendo.
+
+ $Rev$
+ *---------------------------------------------------------------------------*/
+
+#include <nn/crypto/crypto_SwAesCtrContext.h>
+
+#include "HeapChecker.h"
+#include "SdReaderWriter.h"
+#include "CommonLogger.h"
+
+namespace ConsoleBackup
+{
+
+HeapChecker::HeapChecker()
+{
+    // TODO 自動生成されたコンストラクター・スタブ
+
+}
+
+HeapChecker::~HeapChecker()
+{
+    // TODO Auto-generated destructor stub
+}
+
+nn::Result HeapChecker::Check(void* buf, size_t& bufSize)
+{
+    nn::Result result;
+    common::SdReaderWriter sdReaderWriter;
+
+
+    for(; HEAP_SIZE_MIN < bufSize; bufSize /= 2)
+    {
+        result = nn::fs::TryDeleteFile(HEAP_CHECKER_FILE);
+        if(!(result <= nn::fs::ResultNotFound()))
+        {
+            COMMON_LOGGER_RETURN_RESULT_IF_FAILED(result);
+        }
+
+        result = sdReaderWriter.WriteBufWithCmac(HEAP_CHECKER_FILE, buf, bufSize - nn::crypto::SwAesCtrContext::AES_BLOCK_LENGTH);
+        COMMON_LOGGER_RETURN_RESULT_IF_FAILED(result);
+
+        size_t totalSize;
+        result = sdReaderWriter.ReadBufWithCmac(HEAP_CHECKER_FILE, buf, bufSize, &totalSize);
+        if(result <= nn::fs::ResultVerificationFailed())
+        {
+            COMMON_LOGGER("HeapChecker Failure!! HeapSize: %d\n", bufSize);
+        }
+        else
+        {
+            // チェックOK
+            break;
+        }
+    }
+
+    nn::fs::TryDeleteFile(HEAP_CHECKER_FILE);
+
+    if(bufSize == HEAP_SIZE_MIN)
+    {
+        return nn::Result(nn::Result::LEVEL_FATAL, nn::Result::SUMMARY_OUT_OF_RESOURCE, nn::Result::MODULE_APPLICATION,
+                nn::Result::DESCRIPTION_OUT_OF_MEMORY);
+    }
+    else
+    {
+        return nn::ResultSuccess();
+    }
+}
+
+} /* namespace ConsoleBackup */
diff --git a/branches/work/VerificationFailed/sources/ConsoleBackup/HeapChecker.h b/branches/work/VerificationFailed/sources/ConsoleBackup/HeapChecker.h
new file mode 100644
index 0000000..eafccf6
--- /dev/null
+++ b/branches/work/VerificationFailed/sources/ConsoleBackup/HeapChecker.h
@@ -0,0 +1,52 @@
+/*---------------------------------------------------------------------------*
+ Project:  Horizon
+ File:     HeapChecker.h
+
+ Copyright 2009-2011 Nintendo.  All rights reserved.
+
+ These coded instructions, statements, and computer programs contain
+ proprietary information of Nintendo of America Inc. and/or Nintendo
+ Company Ltd., and are protected by Federal copyright law.  They may
+ not be disclosed to third parties or copied or duplicated in any form,
+ in whole or in part, without the prior written consent of Nintendo.
+
+ $Rev$
+ *---------------------------------------------------------------------------*/
+
+#ifndef HEAPCHECKER_H_
+#define HEAPCHECKER_H_
+
+#include <nn.h>
+
+namespace ConsoleBackup
+{
+
+//! @brief      チェックするヒープサイズの下限です。
+const size_t HEAP_SIZE_MIN          = 1024;
+
+//! @brief      チェックに使うファイルへのパスです。
+const wchar_t* const HEAP_CHECKER_FILE = L"sdmc:/CTR_Console_Repair/Check";
+
+class HeapChecker
+{
+public:
+    HeapChecker();
+    virtual ~HeapChecker();
+
+    /*!
+    @brief 与えられたバッファを使ってSDカードに書き出し、データが正しく書き込めているかチェックします。
+           データが正しく書き込めていない場合、バッファサイズを半分にして繰り返しチェックします。
+           正しく書き込めた最大のbufSizeが設定されます。
+
+    @param[in]       buf       バッファ
+    @param[inout]    buSize    バッファサイズ
+
+    @return    ResultOutofMemory    データが正しく書き込めるバッファが存在しない場合に返されます。
+    @return    ResultSuccess        上記以外
+    */
+
+    nn::Result Check(void* buf, size_t& bufSize);
+};
+
+} /* namespace ConsoleBackup */
+#endif /* HEAPCHECKER_H_ */
diff --git a/branches/work/VerificationFailed/sources/ConsoleBackup/OMakefile b/branches/work/VerificationFailed/sources/ConsoleBackup/OMakefile
index 535a191..a1c414d 100644
--- a/branches/work/VerificationFailed/sources/ConsoleBackup/OMakefile
+++ b/branches/work/VerificationFailed/sources/ConsoleBackup/OMakefile
@@ -31,6 +31,7 @@ SOURCES[]           =
                         Exporter.cpp
                         Checker.cpp
                         SavedataChecker.cpp
+                        HeapChecker.cpp
                         ../common/Util.cpp
                         ../common/DrawSystemState.cpp
                         ../common/FileTransfer.cpp