diff --git a/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/ConsoleBackup.cpp b/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/ConsoleBackup.cpp
index d37a148..cd94f6c 100644
--- a/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/ConsoleBackup.cpp
+++ b/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/ConsoleBackup.cpp
@@ -127,6 +127,7 @@ extern "C" void nnMain(void)
     // RenderSystemを作ってからログが出せる
     common::Logger::InitializeEjectThread();
     common::Logger::SetEjectHandler(OnSdEjected);
+    common::Logger::SetInsertHandler(OnSdInserted);
     // 起動時に削除
     common::Logger::GetLoggerInstance()->ClearSdLog();
 
diff --git a/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.cpp b/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.cpp
index 9eb2c89..b201e96 100644
--- a/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.cpp
+++ b/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.cpp
@@ -506,6 +506,11 @@ void OnSdEjected()
     }
 }
 
+void OnSdInserted()
+{
+    common::Logger::GetLoggerInstance()->ClearSdLog();
+}
+
 void InitializeState()
 {
     s_BackupState = STARTUP;
diff --git a/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.h b/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.h
index 0308307..ef10878 100644
--- a/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.h
+++ b/branches/1stNUP_for_2ndNUP/sources/ConsoleBackup/Controller.h
@@ -54,6 +54,9 @@ bool IsBackupWarning();
 // SDカードが抜き出されたときに実行したい関数
 void OnSdEjected();
 
+// SDカードが挿し込まれたときに実行する処理
+void OnSdInserted();
+
 // 状態を初期化する
 void InitializeState();
 
diff --git a/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.cpp b/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.cpp
index 9851395..5ce9d4b 100644
--- a/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.cpp
+++ b/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.cpp
@@ -82,6 +82,7 @@ void SdmcInsertedEventThreadFunc()
         {
             s_SdInsertedEventFunc();
         }
+        SdMountManager::ForceUnmount();
         s_SdInsertedEvent.ClearSignal();
         s_SdLogger.Inactivate();
     }
@@ -124,12 +125,6 @@ SdLogger* GetSdInstance()
 void SdLogger::Print(const char* fmt, ::std::va_list arg)
 {
     Activate();
-    if(!m_Permitted)
-    {
-        NN_LOG("SD Write Not Permitted\n");
-        return;
-    }
-
     nn::Result result;
     result = SdMountManager::Mount();
     if (result.IsFailure())
@@ -143,6 +138,29 @@ void SdLogger::Print(const char* fmt, ::std::va_list arg)
 
     stringSize = nn::nstd::TVSNPrintf(str, sizeof(str), fmt, arg);
 
+    // 書き込み不可であればバッファリングのみ行う
+    if(!m_Permitted)
+    {
+        NN_LOG("SD Write Not Permitted\n");
+        m_Buffer.push_back(std::string(str));
+        return;
+    }
+
+    // バッファリング済みならまず吐き出す
+    for(std::vector<std::string>::iterator it = m_Buffer.begin(); it != m_Buffer.end(); it++)
+    {
+        PrintCore(it->c_str(), it->size());
+    }
+    m_Buffer.clear();
+
+    PrintCore(str, stringSize);
+
+    SdMountManager::Unmount();
+}
+
+nn::Result SdLogger::PrintCore(const char* str, size_t size)
+{
+    nn::Result result;
     ::std::wstring log(common::SDMC_ROOT_DIRECTORY_PATH);
     log += common::LOG_PATHNAME;
 
@@ -168,7 +186,7 @@ void SdLogger::Print(const char* fmt, ::std::va_list arg)
             if (result.IsSuccess())
             {
                 s32 writeSize;
-                result = sd.TryWrite(&writeSize, str, stringSize, true);
+                result = sd.TryWrite(&writeSize, str, size, true);
                 if (result.IsSuccess())
                 {
                     result = sd.TryFlush();
@@ -204,7 +222,8 @@ void SdLogger::Print(const char* fmt, ::std::va_list arg)
 
     dir.Finalize();
     sd.Finalize();
-    SdMountManager::Unmount();
+
+    return nn::ResultSuccess();
 }
 
 void SdLogger::Clear()
diff --git a/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.h b/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.h
index 6d543f2..103c5fc 100644
--- a/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.h
+++ b/branches/1stNUP_for_2ndNUP/sources/common/SdLogger.h
@@ -17,6 +17,8 @@
 #define SDLOGGER_H_
 
 #include <nn.h>
+#include <vector>
+#include <string>
 
 namespace common
 {
@@ -42,7 +44,10 @@ public:
 private:
     void Activate();
 
+    nn::Result PrintCore(const char* str, size_t size);
+
     nn::fs::FileOutputStream sd;
+    std::vector<std::string> m_Buffer;
     bool m_TryActivate;
     bool m_Permitted;
     NN_PADDING2;