diff --git a/trunk/ConsoleDataMigration/sources/ConsoleBackup/SavedataChecker.cpp b/trunk/ConsoleDataMigration/sources/ConsoleBackup/SavedataChecker.cpp
index 98e6d4b..d8c8028 100644
--- a/trunk/ConsoleDataMigration/sources/ConsoleBackup/SavedataChecker.cpp
+++ b/trunk/ConsoleDataMigration/sources/ConsoleBackup/SavedataChecker.cpp
@@ -179,61 +179,7 @@ nn::Result SavedataCheckerBase::CleanUpFilesRecursively(bool* modified, std::str
 
 nn::Result SavedataCheckerBase::GetFileSize(std::wstring currentDirectory)
 {
-    nn::fs::Directory dir;
-    nn::fs::DirectoryEntry entry;
-    nn::Result result;
-
-    NN_LOG("%s\n", common::GetCharStr(currentDirectory.c_str()));
-    result = dir.TryInitialize(currentDirectory.c_str());
-    if(result.IsFailure())
-    {
-        return result;
-    }
-
-    for (;;)
-    {
-        s32 numRead;
-        result = dir.TryRead(&numRead, &entry, 1);
-        if(result.IsFailure())
-        {
-            continue;
-        }
-
-
-        if(numRead == 0)
-        {
-            break;
-        }
-
-        if (std::wcscmp(entry.entryName, L".") == 0 || std::wcscmp(entry.entryName, L"..") == 0)
-        {
-            continue;
-        }
-
-
-        // ディレクトリの場合
-        if (entry.attributes.isDirectory)
-        {
-            return GetFileSize(currentDirectory + std::wstring(entry.entryName) + std::wstring(L"/"));
-        }
-        // ファイルの場合
-        else
-        {
-            nn::fs::FileInputStream file;
-            std::wstring filePath = (currentDirectory + std::wstring(entry.entryName)).c_str();
-            const wchar_t* path = filePath.c_str();
-
-            result = file.TryInitialize(path);
-            if(result.IsFailure())
-            {
-                continue;
-            }
-
-            m_CalculatedFileSize += file.GetSize();
-        }
-    }
-
-    return nn::ResultSuccess();
+    return common::CalculateFileSizeRecursively(currentDirectory, m_CalculatedFileSize);
 }
 
 s64 SavedataCheckerBase::GetCalculatedSize()
diff --git a/trunk/ConsoleDataMigration/sources/common/FileName.h b/trunk/ConsoleDataMigration/sources/common/FileName.h
index 310e351..bb66cdf 100644
--- a/trunk/ConsoleDataMigration/sources/common/FileName.h
+++ b/trunk/ConsoleDataMigration/sources/common/FileName.h
@@ -71,6 +71,7 @@ const wchar_t* const MOVE_CONTEXT_PATHNAME = L"sdmc:/CTR_Console_Repair/MoveCont
 const wchar_t* const SD_NINTENDO_3DS_ROOT_PATH = L"sdmc:/Nintendo 3DS/";
 
 const wchar_t* const SD_SAEVDATA_SYS_NAME = L"sysdata";
+const wchar_t* const SD_SAEVDATA_EXT_NAME = L"extdata";
 
 enum TWL_PATH_INDEX
 {
diff --git a/trunk/ConsoleDataMigration/sources/common/FileTransfer.cpp b/trunk/ConsoleDataMigration/sources/common/FileTransfer.cpp
index 04b6823..daf8d15 100644
--- a/trunk/ConsoleDataMigration/sources/common/FileTransfer.cpp
+++ b/trunk/ConsoleDataMigration/sources/common/FileTransfer.cpp
@@ -766,4 +766,63 @@ bool AddPathNameAndUpdateContext(nn::fs::FileOutputStream* file, const wchar_t *
     return true;
 }
 
+nn::Result CalculateFileSizeRecursively(std::wstring currentDirectory, s64& fileSize)
+{
+    nn::fs::Directory dir;
+    nn::fs::DirectoryEntry entry;
+    nn::Result result;
+
+    NN_LOG("%s\n", common::GetCharStr(currentDirectory.c_str()));
+    result = dir.TryInitialize(currentDirectory.c_str());
+    if(result.IsFailure())
+    {
+        return result;
+    }
+
+    for (;;)
+    {
+        s32 numRead;
+        result = dir.TryRead(&numRead, &entry, 1);
+        if(result.IsFailure())
+        {
+            continue;
+        }
+
+
+        if(numRead == 0)
+        {
+            break;
+        }
+
+        if (std::wcscmp(entry.entryName, L".") == 0 || std::wcscmp(entry.entryName, L"..") == 0)
+        {
+            continue;
+        }
+
+
+        // ディレクトリの場合
+        if (entry.attributes.isDirectory)
+        {
+            return CalculateFileSizeRecursively(currentDirectory + std::wstring(entry.entryName) + std::wstring(L"/"), fileSize);
+        }
+        // ファイルの場合
+        else
+        {
+            nn::fs::FileInputStream file;
+            std::wstring filePath = (currentDirectory + std::wstring(entry.entryName)).c_str();
+            const wchar_t* path = filePath.c_str();
+
+            result = file.TryInitialize(path);
+            if(result.IsFailure())
+            {
+                continue;
+            }
+
+            fileSize += file.GetSize();
+        }
+    }
+
+    return nn::ResultSuccess();
+}
+
 }
diff --git a/trunk/ConsoleDataMigration/sources/common/FileTransfer.h b/trunk/ConsoleDataMigration/sources/common/FileTransfer.h
index 02042c2..d74fa78 100644
--- a/trunk/ConsoleDataMigration/sources/common/FileTransfer.h
+++ b/trunk/ConsoleDataMigration/sources/common/FileTransfer.h
@@ -59,6 +59,9 @@ const char* GetCharStr(const wchar_t* path);
 
 void AddPkcsPadding(u8* paddingSize, void* buf, size_t bufSize, s32* readSize);
 
+// ディレクトリ以下のファイルサイズを計算する
+nn::Result CalculateFileSizeRecursively(std::wstring currentDirectory, s64& fileSize);
+
 }
 
 #endif /* FILETRANSFER_H_ */
diff --git a/trunk/ConsoleDataMigration/sources/common/SaveDataMover.cpp b/trunk/ConsoleDataMigration/sources/common/SaveDataMover.cpp
index 69a1fb0..b163dc5 100644
--- a/trunk/ConsoleDataMigration/sources/common/SaveDataMover.cpp
+++ b/trunk/ConsoleDataMigration/sources/common/SaveDataMover.cpp
@@ -16,7 +16,9 @@
 #include <string>
 
 #include <nn/fs/fs_ApiSysSaveData.h>
+#include <nn/fs/fs_ApiSharedExtSaveData.h>
 #include <nn/fs/fs_ApiDeviceMove.h>
+#include <nn/fs/fs_ResultPrivate.h>
 
 #include <nn/ndm.h>
 
@@ -24,6 +26,7 @@
 #include "CommonLogger.h"
 #include "FileName.h"
 #include "SdReaderWriter.h"
+#include "FileTransfer.h"
 
 
 namespace common
@@ -31,9 +34,12 @@ namespace common
 
 namespace
 {
+    const char* ARC_NAME = "sext:";
+
     const s32 MAX_SYSTEM_SAVE_DATA_ID_NUM = 256;
     nn::fs::SystemSaveDataId s_SystemSaveDataIdList[MAX_SYSTEM_SAVE_DATA_ID_NUM * sizeof(bit32)];
-
+    const s32 MAX_SHARED_EXT_SAVE_DATA_ID_NUM = 10;
+    nn::fs::SharedExtSaveDataId s_SharedExtSaveDataIdList[MAX_SHARED_EXT_SAVE_DATA_ID_NUM * sizeof(bit32)];
 
     bool IsNotMovedId(bit32 id)
     {
@@ -46,23 +52,21 @@ namespace
 SaveDataMover::SaveDataMover() :
         m_Progress(0), m_FinishedSize(0), m_TotalSize(0), m_Result(nn::ResultSuccess())
 {
-    // TODO 自動生成されたコンストラクター・スタブ
 }
 
 SaveDataMover::~SaveDataMover()
 {
-    // TODO Auto-generated destructor stub
 }
 
 void SaveDataMover::StartExport(void* buf, size_t bufSize, u64* progress)
 {
     SetupExport();
+    COMMON_LOGGER_RETURN_VOID_IF_FAILED(GetLastResult());
     CalculateFileSize();
-    if(GetLastResult().IsFailure())
-    {
-        return;
-    }
+    COMMON_LOGGER_RETURN_VOID_IF_FAILED(GetLastResult());
     ExportSystemSaveData(buf, bufSize, progress);
+    COMMON_LOGGER_RETURN_VOID_IF_FAILED(GetLastResult());
+    ExportSharedExtSaveData(buf, bufSize, progress);
 }
 
 nn::Result SaveDataMover::GetLastResult()
@@ -84,19 +88,33 @@ void SaveDataMover::SetupExport()
     COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
 
     // 3. 出力用ディレクトリの作成
+    // 3.1 システムセーブデータ用ディレクトリ
     common::SdReaderWriter sdWriter;
     m_Result = sdWriter.CreateDirectory((::std::wstring(common::SDMC_ROOT_DIRECTORY_PATH) + ::std::wstring(
             common::SD_SAVEDATA_ROOT_NAME) + std::wstring(common::SD_SAEVDATA_SYS_NAME)).c_str());
     COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
+
+    // 3.2 共有拡張セーブデータ用ディレクトリ
+    m_Result = sdWriter.CreateDirectory((::std::wstring(common::SDMC_ROOT_DIRECTORY_PATH) + ::std::wstring(
+            common::SD_SAVEDATA_ROOT_NAME) + std::wstring(common::SD_SAEVDATA_EXT_NAME)).c_str());
+    COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
+
 }
 
 void SaveDataMover::CalculateFileSize()
+{
+    CalculateSystemSaveDataSize();
+    CalculateSharedExtSaveDataSize();
+}
+
+void SaveDataMover::CalculateSystemSaveDataSize()
 {
     s32 systemSaveDataIdNum;
     m_Result = nn::fs::EnumerateSystemSaveData(&systemSaveDataIdNum, s_SystemSaveDataIdList, MAX_SYSTEM_SAVE_DATA_ID_NUM);
     COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
 
-    for(int i = 0; i < systemSaveDataIdNum; ++i)
+    // システムセーブデータのサイズを確認する
+    for(s32 i = 0; i < systemSaveDataIdNum; ++i)
     {
         nn::fs::FileInputStream input;
 
@@ -117,6 +135,35 @@ void SaveDataMover::CalculateFileSize()
     }
 }
 
+void SaveDataMover::CalculateSharedExtSaveDataSize()
+{
+    // 共有拡張セーブデータのサイズを確認する
+    // 0. ID の列挙を行う。
+    s32 sharedExtSaveDataIdNum;
+    m_Result = nn::fs::EnumerateSharedExtSaveData(&sharedExtSaveDataIdNum, s_SharedExtSaveDataIdList,
+            MAX_SHARED_EXT_SAVE_DATA_ID_NUM);
+    for(s32 i = 0; i < sharedExtSaveDataIdNum; ++i)
+    {
+        bit32 id = s_SharedExtSaveDataIdList[i];
+
+        // 1. fs::MountSharedExtSaveDataRawStorage を呼び
+        //    ID に対応するアーカイブをマウントする。
+        // 既存の共有拡張セーブデータ領域へのアーカイブをマウントします。
+        m_Result = nn::fs::MountSharedExtSaveDataRawStorage(ARC_NAME, id);
+        COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
+
+        // 2. アーカイブ内を走査して、含まれるファイルと
+        //    ディレクトリを、その構造を保ったまま
+        //    エクスポートする。
+        COMMON_LOGGER_RETURN_VOID_IF_FAILED(common::CalculateFileSizeRecursively(L"sext:/", m_TotalSize));
+
+        // 3. アンマウントする
+        m_Result = nn::fs::Unmount(ARC_NAME);
+        COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
+    }
+    NN_LOG("calculatedSize = %lld\n", m_TotalSize);
+}
+
 void SaveDataMover::ExportSystemSaveData(void* buf, size_t bufSize, u64* progress)
 {
     s64 totalFileSize = 0;
@@ -126,7 +173,7 @@ void SaveDataMover::ExportSystemSaveData(void* buf, size_t bufSize, u64* progres
     m_Result = nn::fs::EnumerateSystemSaveData(&systemSaveDataIdNum, s_SystemSaveDataIdList, MAX_SYSTEM_SAVE_DATA_ID_NUM);
     COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
 
-    for(int i = 0; i < systemSaveDataIdNum; ++i)
+    for(s32 i = 0; i < systemSaveDataIdNum; ++i)
     {
         nn::fs::FileInputStream input;
 
@@ -178,27 +225,132 @@ void SaveDataMover::ExportSystemSaveData(void* buf, size_t bufSize, u64* progres
     NN_LOG("totalFileSize = %lld\n", totalFileSize);
 }
 
+void SaveDataMover::ExportSharedExtSaveData(void* buf, size_t bufSize, u64* progress)
+{
+    // 0. ID の列挙を行う。
+    s32 sharedExtSaveDataIdNum;
+    m_Result = nn::fs::EnumerateSharedExtSaveData(&sharedExtSaveDataIdNum, s_SharedExtSaveDataIdList,
+            MAX_SHARED_EXT_SAVE_DATA_ID_NUM);
+    for(s32 i = 0; i < sharedExtSaveDataIdNum; ++i)
+    {
+        bit32 id = s_SharedExtSaveDataIdList[i];
+        NN_LOG("Export: %08x\n", id);
+
+        // 1. fs::MountSharedExtSaveDataRawStorage を呼び
+        //    ID に対応するアーカイブをマウントする。
+        // 既存の共有拡張セーブデータ領域へのアーカイブをマウントします。
+        m_Result = nn::fs::MountSharedExtSaveDataRawStorage(ARC_NAME, id);
+        COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
+
+        m_Result = Export(buf, bufSize, id, progress);
+        COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
+
+        // 3. アンマウントする
+        m_Result = nn::fs::Unmount(ARC_NAME);
+        COMMON_LOGGER_RETURN_VOID_IF_FAILED(m_Result);
+    }
+
+}
+
+nn::Result SaveDataMover::Export(void* buf, size_t bufSize, bit32 id, u64* progress)
+{
+    const s32 MAX_PATH_LEN = 127;
+    char destRoot[MAX_PATH_LEN + 1];
+
+    nn::nstd::TSNPrintf(destRoot, MAX_PATH_LEN, "%s/%08x", SD_SAVEDATA_EXT_ROOT_PATH, id);
+    NN_LOG("destRoot = %s\n", destRoot);;
+
+    // 出力先ディレクトリを作成
+    COMMON_LOGGER_RETURN_RESULT_IF_FAILED(nn::fs::TryCreateDirectory(destRoot));
+
+    // 2. アーカイブ内を走査して、含まれるファイルと
+    //    ディレクトリを、その構造を保ったまま
+    //    エクスポートする。
+    COMMON_LOGGER_RETURN_RESULT_IF_FAILED(CopyRecursivly(buf, bufSize, ARC_NAME, destRoot, progress));
+
+    return nn::ResultSuccess();
+}
+
 // ファイルの読み書き
 nn::Result SaveDataMover::CopyFile(nn::fs::FileInputStream& is, nn::fs::FileOutputStream& os, void* pBuffer,
         const s32 bufferSize, u64* progress)
 {
     s64 restSize;
-    NN_UTIL_RETURN_IF_FAILED(is.TryGetSize(&restSize));
+    COMMON_LOGGER_RETURN_RESULT_IF_FAILED(is.TryGetSize(&restSize));
 
     while (restSize > 0)
     {
         s32 readSize = restSize > bufferSize ? bufferSize : restSize;
         s32 read = 0;
         s32 write = 0;
-        NN_UTIL_RETURN_IF_FAILED(is.TryRead(&read, pBuffer, readSize));
-        NN_UTIL_RETURN_IF_FAILED(os.TryWrite(&write, pBuffer, read));
+        COMMON_LOGGER_RETURN_RESULT_IF_FAILED(is.TryRead(&read, pBuffer, readSize));
+        COMMON_LOGGER_RETURN_RESULT_IF_FAILED(os.TryWrite(&write, pBuffer, read));
 
         restSize -= read;
         m_FinishedSize += read;
         *progress = m_FinishedSize * 100 / m_TotalSize;
+        NN_LOG("FinishedSize = %lld\n", m_FinishedSize);
         NN_LOG("progress = %lld\n", *progress);
     }
     return nn::ResultSuccess();
 }
 
+// ディレクトリ内を再帰的にコピー
+// INFO: 本当は再帰を使わないで書く
+nn::Result SaveDataMover::CopyRecursivly(void* buf, size_t bufSize, const char* src, const char* dest, u64* progress)
+{
+    char srcPath[128];
+    char destPath[128];
+    char entryName[128];
+
+    nn::nstd::TSNPrintf(srcPath, sizeof(srcPath), "%s/", src);
+    nn::fs::Directory srcDir;
+    COMMON_LOGGER_RETURN_RESULT_IF_FAILED(srcDir.TryInitialize(srcPath));
+
+    while (1)
+    {
+        nn::fs::DirectoryEntry entry;
+        s32 numRead;
+        COMMON_LOGGER_RETURN_RESULT_IF_FAILED(srcDir.TryRead(&numRead, &entry, 1));
+        if (numRead == 0)
+        {
+            break;
+        }
+
+        std::wcstombs(entryName, entry.entryName, sizeof(entryName) - 1);
+        entryName[sizeof(entryName) - 1] = '\0';
+        nn::nstd::TSNPrintf(srcPath, sizeof(srcPath), "%s/%s", src, entryName);
+        nn::nstd::TSNPrintf(destPath, sizeof(destPath), "%s/%s", dest, entryName);
+
+        if (entry.attributes.isDirectory)
+        {
+            nn::Result result = nn::fs::TryCreateDirectory(destPath);
+            if (result.IsFailure())
+            {
+                if (result.GetDescription() == nn::fs::DESCRIPTION_FAT_ALREADY_EXISTS
+                        && result.GetModule() == nn::Result::MODULE_NN_FS)
+                {
+                }
+                else
+                {
+                    return result;
+                }
+            }
+            m_Result = CopyRecursivly(buf, bufSize, srcPath, destPath, progress);
+            COMMON_LOGGER_RETURN_RESULT_IF_FAILED(m_Result);
+        }
+        else
+        {
+            nn::fs::FileInputStream input;
+            COMMON_LOGGER_RETURN_RESULT_IF_FAILED(input.TryInitialize(srcPath));
+
+            nn::fs::FileOutputStream output;
+            COMMON_LOGGER_RETURN_RESULT_IF_FAILED(output.TryInitialize(destPath, true));
+
+            CopyFile(input, output, buf, bufSize, progress);
+        }
+    }
+    return nn::ResultSuccess();
+}
+
 } /* namespace common */
diff --git a/trunk/ConsoleDataMigration/sources/common/SaveDataMover.h b/trunk/ConsoleDataMigration/sources/common/SaveDataMover.h
index cc66b21..20e4b69 100644
--- a/trunk/ConsoleDataMigration/sources/common/SaveDataMover.h
+++ b/trunk/ConsoleDataMigration/sources/common/SaveDataMover.h
@@ -43,16 +43,27 @@ private:
     //! @brief 出力するファイルサイズを計算します
     void CalculateFileSize();
 
+    void CalculateSystemSaveDataSize();
+    void CalculateSharedExtSaveDataSize();
+
     //! @brief システムセーブデータを出力します
     void ExportSystemSaveData(void* buf, size_t bufSize, u64* progress);
 
+    //! @brief 共有拡張セーブデータを出力します
+    void ExportSharedExtSaveData(void* buf, size_t bufSize, u64* progress);
+
+    //! @breif 共有拡張セーブデータを出力します
+    nn::Result Export(void* buf, size_t bufSize, bit32 id, u64* progress);
+
     nn::Result CopyFile(nn::fs::FileInputStream& is, nn::fs::FileOutputStream& os, void* pBuffer, const s32 bufferSize,
             u64* progress);
 
+    nn::Result CopyRecursivly(void* buf, size_t bufSize, const char* src, const char* dest, u64* progress);
+
     NN_PADDING4;
-    u64 m_Progress;
-    u64 m_FinishedSize;
-    u64 m_TotalSize;
+    s64 m_Progress;
+    s64 m_FinishedSize;
+    s64 m_TotalSize;
 
     nn::Result m_Result;
 };