diff --git a/build/nandfirm/menu-launcher/ARM9/main.c b/build/nandfirm/menu-launcher/ARM9/main.c
index fd835dfa..7c5c7eea 100644
--- a/build/nandfirm/menu-launcher/ARM9/main.c
+++ b/build/nandfirm/menu-launcher/ARM9/main.c
@@ -92,11 +92,7 @@ static void PreInit(void)
     /*
      メインメモリ関連
     */
-    // SHARED領域クリア
-    MI_CpuClearFast((void *)HW_WRAM_EX_LOCK_BUF,        (HW_WRAM_EX_LOCK_BUF_END - HW_WRAM_EX_LOCK_BUF));
-    MI_CpuClearFast((void *)HW_BIOS_EXCP_STACK_MAIN,    (HW_REAL_TIME_CLOCK_BUF - HW_BIOS_EXCP_STACK_MAIN));
-    MI_CpuClearFast((void *)HW_PXI_SIGNAL_PARAM_ARM9,   (HW_MMEMCHECKER_MAIN - HW_PXI_SIGNAL_PARAM_ARM9));
-    MI_CpuClearFast((void*)HW_ROM_HEADER_BUF,           (HW_ROM_HEADER_BUF_END-HW_ROM_HEADER_BUF));
+    // SHARED領域はスタートアップ時でクリア
 
     // FS_MOUNT領域の初期化
     MI_CpuCopy8(firmSettings, (char*)HW_TWL_FS_MOUNT_INFO_BUF, sizeof(firmSettings));
diff --git a/build/nandfirm/menu-launcher2/ARM9/main.c b/build/nandfirm/menu-launcher2/ARM9/main.c
index 8e2f4ba2..20421863 100644
--- a/build/nandfirm/menu-launcher2/ARM9/main.c
+++ b/build/nandfirm/menu-launcher2/ARM9/main.c
@@ -93,11 +93,7 @@ static void PreInit(void)
     /*
      メインメモリ関連
     */
-    // SHARED領域クリア
-    MI_CpuClearFast((void *)HW_WRAM_EX_LOCK_BUF,        (HW_WRAM_EX_LOCK_BUF_END - HW_WRAM_EX_LOCK_BUF));
-    MI_CpuClearFast((void *)HW_BIOS_EXCP_STACK_MAIN,    (HW_REAL_TIME_CLOCK_BUF - HW_BIOS_EXCP_STACK_MAIN));
-    MI_CpuClearFast((void *)HW_PXI_SIGNAL_PARAM_ARM9,   (HW_MMEMCHECKER_MAIN - HW_PXI_SIGNAL_PARAM_ARM9));
-    MI_CpuClearFast((void*)HW_ROM_HEADER_BUF,           (HW_ROM_HEADER_BUF_END-HW_ROM_HEADER_BUF));
+    // SHARED領域はスタートアップ時でクリア
 
     // FS_MOUNT領域の初期化
     MI_CpuCopy8(firmSettings, (char*)HW_TWL_FS_MOUNT_INFO_BUF, sizeof(firmSettings));