diff --git a/Source/RMG/M64P/Wrapper/Core.cpp b/Source/RMG/M64P/Wrapper/Core.cpp
index c9b6b879..8d792619 100644
--- a/Source/RMG/M64P/Wrapper/Core.cpp
+++ b/Source/RMG/M64P/Wrapper/Core.cpp
@@ -55,6 +55,22 @@ bool Core::Init(m64p_dynlib_handle handle)
         return false;
     }
 
+    media_loader = {
+        (void *)this,
+        media_loader_get_gb_cart_rom,
+        media_loader_get_gb_cart_ram,
+        media_loader_get_dd_rom,
+        media_loader_get_dd_disk
+    };
+
+    ret = M64P::Core.DoCommand(M64CMD_SET_MEDIA_LOADER, sizeof(media_loader), &media_loader);
+    if (ret != M64ERR_SUCCESS)
+    {
+        this->error_Message = "Core::Init M64P::Core.DoCommand(M64CMD_SET_MEDIA_LOADER) Failed: ";
+        this->error_Message += M64P::Core.ErrorMessage(ret);
+        return false;
+    }
+
     this->handle = handle;
 
     return true;
@@ -170,6 +186,36 @@ M64P::Wrapper::Plugin *Core::plugin_Get(PluginType type)
     }
 }
 
+char *Core::media_loader_get_gb_cart_rom(void *_this, int)
+{
+    return NULL;
+}
+
+char *Core::media_loader_get_gb_cart_ram(void *_this, int)
+{
+    return NULL;
+}
+
+char *Core::media_loader_get_dd_rom(void *_this)
+{
+    QString file = g_Settings.GetStringValue(SettingsID::Core_64DD_RomFile);
+
+    if (file.isEmpty())
+        return NULL;
+
+    return strdup(file.toStdString().c_str());;
+}
+
+char *Core::media_loader_get_dd_disk(void *_this)
+{
+    QString file = ((Core*)_this)->rom_Combo_Disk;
+
+    if (file.isEmpty())
+        return NULL;
+
+    return strdup(file.toStdString().c_str());
+}
+
 bool Core::plugin_Attach(Plugin *p)
 {
     m64p_error ret;
@@ -382,6 +428,13 @@ bool Core::LaunchEmulation(QString file)
     return true;
 }
 
+bool Core::LaunchEmulation(QString cartRom, QString diskRom)
+{
+    this->rom_Combo_Disk = diskRom;
+
+    return this->LaunchEmulation(cartRom);
+}
+
 bool Core::StopEmulation(void)
 {
     m64p_error ret;
@@ -678,7 +731,7 @@ bool Core::rom_ApplyPluginOverlay(void)
         value = g_Settings.GetStringValue(settingIdArray[i], section);
         if (!value.isEmpty())
         {
-            Plugin_t plugin = { .FileName = value };
+            Plugin_t plugin = {.FileName = value};
             if (!this->SetPlugin(plugin))
                 return false;
         }
diff --git a/Source/RMG/M64P/Wrapper/Core.hpp b/Source/RMG/M64P/Wrapper/Core.hpp
index c9b2b703..2a3727e7 100644
--- a/Source/RMG/M64P/Wrapper/Core.hpp
+++ b/Source/RMG/M64P/Wrapper/Core.hpp
@@ -40,6 +40,7 @@ class Core
     bool GetDefaultRomInfo(RomInfo_t *);
 
     bool LaunchEmulation(QString);
+    bool LaunchEmulation(QString, QString);
     bool StopEmulation(void);
     bool PauseEmulation(void);
     bool ResumeEmulation(void);
@@ -73,6 +74,15 @@ class Core
   private:
     QString error_Message;
 
+    m64p_media_loader media_loader;
+
+    QString rom_Combo_Disk;
+
+    static char* media_loader_get_gb_cart_rom(void*, int);
+    static char* media_loader_get_gb_cart_ram(void*, int);
+    static char* media_loader_get_dd_rom(void*);
+    static char* media_loader_get_dd_disk(void*);
+
     m64p_dynlib_handle handle;
 
     QList<Plugin_t> plugin_Todo;
diff --git a/Source/RMG/Thread/EmulationThread.cpp b/Source/RMG/Thread/EmulationThread.cpp
index f171e688..1486073c 100644
--- a/Source/RMG/Thread/EmulationThread.cpp
+++ b/Source/RMG/Thread/EmulationThread.cpp
@@ -25,13 +25,18 @@ void EmulationThread::SetRomFile(QString file)
     this->rom_File = file;
 }
 
+void EmulationThread::SetDiskFile(QString file)
+{
+    this->disk_File = file;
+}
+
 void EmulationThread::run(void)
 {
     emit this->on_Emulation_Started();
 
     bool ret;
 
-    ret = g_MupenApi.Core.LaunchEmulation(this->rom_File);
+    ret = g_MupenApi.Core.LaunchEmulation(this->rom_File, this->disk_File);
 
     if (!ret)
         this->error_Message = g_MupenApi.Core.GetLastError();
diff --git a/Source/RMG/Thread/EmulationThread.hpp b/Source/RMG/Thread/EmulationThread.hpp
index cbdfa7d8..fca4e7b9 100644
--- a/Source/RMG/Thread/EmulationThread.hpp
+++ b/Source/RMG/Thread/EmulationThread.hpp
@@ -27,6 +27,7 @@ class EmulationThread : public QThread
     ~EmulationThread(void);
 
     void SetRomFile(QString);
+    void SetDiskFile(QString);
 
     void run(void) override;
 
@@ -34,6 +35,7 @@ class EmulationThread : public QThread
 
   private:
     QString rom_File;
+    QString disk_File;
     QString error_Message;
 
   signals:
diff --git a/Source/RMG/Thread/RomSearcherThread.cpp b/Source/RMG/Thread/RomSearcherThread.cpp
index cbafff8e..dd2ce368 100644
--- a/Source/RMG/Thread/RomSearcherThread.cpp
+++ b/Source/RMG/Thread/RomSearcherThread.cpp
@@ -53,6 +53,9 @@ void RomSearcherThread::rom_Search(QString directory)
     filter << "*.N64";
     filter << "*.Z64";
     filter << "*.V64";
+    filter << "*.ndd";
+    filter << "*.D64";
+
 
     QFileInfoList fileList = dir.entryInfoList(filter, QDir::Files);
     QFileInfo fileInfo;
diff --git a/Source/RMG/UserInterface/Dialog/SettingsDialog.cpp b/Source/RMG/UserInterface/Dialog/SettingsDialog.cpp
index 3e63184f..28900d37 100644
--- a/Source/RMG/UserInterface/Dialog/SettingsDialog.cpp
+++ b/Source/RMG/UserInterface/Dialog/SettingsDialog.cpp
@@ -22,6 +22,7 @@ SettingsDialog::SettingsDialog(QWidget *parent) : QDialog(parent, Qt::WindowSyst
 
     this->treeWidget->topLevelItem(0)->setSelected(true);
     this->treeWidget->expandAll();
+    this->treeWidget->setItemsExpandable(false);
 
     this->inGame = g_EmuThread->isRunning();
     if (inGame)
diff --git a/Source/RMG/UserInterface/MainWindow.cpp b/Source/RMG/UserInterface/MainWindow.cpp
index d0cfab23..72ec7b14 100644
--- a/Source/RMG/UserInterface/MainWindow.cpp
+++ b/Source/RMG/UserInterface/MainWindow.cpp
@@ -375,7 +375,7 @@ void MainWindow::emulationThread_Connect(void)
             Qt::BlockingQueuedConnection);
 }
 
-void MainWindow::emulationThread_Launch(QString file)
+void MainWindow::emulationThread_Launch(QString cartRom, QString diskRom)
 {
     g_MupenApi.Config.Save();
 
@@ -395,10 +395,16 @@ void MainWindow::emulationThread_Launch(QString file)
     this->ui_Widget_OpenGL->SetAllowResizing(this->ui_AllowManualResizing);
     this->ui_Widget_OpenGL->SetHideCursor(this->ui_HideCursorInEmulation);
 
-    this->emulationThread->SetRomFile(file);
+    this->emulationThread->SetRomFile(cartRom);
+    this->emulationThread->SetDiskFile(diskRom);
     this->emulationThread->start();
 }
 
+void MainWindow::emulationThread_Launch(QString file)
+{
+    this->emulationThread_Launch(file, "");
+}
+
 void MainWindow::menuBar_Actions_Init(void)
 {
     this->action_File_OpenRom = new QAction(this);
@@ -654,7 +660,7 @@ void MainWindow::on_Action_File_OpenRom(void)
     QString dir;
 
     dialog.setFileMode(QFileDialog::FileMode::ExistingFile);
-    dialog.setNameFilter("N64 Roms (*.n64 *.z64 *.v64)");
+    dialog.setNameFilter("N64 Roms (*.n64 *.z64 *.v64 *.ndd *.d64)");
     dialog.setWindowIcon(this->ui_Icon);
 
     ret = dialog.exec();
@@ -677,6 +683,52 @@ void MainWindow::on_Action_File_OpenRom(void)
 
 void MainWindow::on_Action_File_OpenCombo(void)
 {
+    bool isRunning = g_MupenApi.Core.IsEmulationRunning();
+    bool isPaused = g_MupenApi.Core.isEmulationPaused();
+
+    if (isRunning && !isPaused)
+    {
+        this->on_Action_System_Pause();
+    }
+
+    QFileDialog dialog(this);
+    int ret;
+    QString dir, cartRom, diskRom;
+
+    dialog.setFileMode(QFileDialog::FileMode::ExistingFile);
+    dialog.setNameFilter("N64 ROM (*.n64 *.z64 *.v64)");
+
+    ret = dialog.exec();
+    if (!ret)
+    {
+        if (isRunning && !isPaused)
+        {
+            this->on_Action_System_Pause();
+        }
+        return;
+    }
+
+    cartRom = dialog.selectedFiles().first();
+
+    dialog.setNameFilter("64DD ROM (*.ndd *.d64)");
+    ret = dialog.exec();
+    if (!ret)
+    {
+        if (isRunning && !isPaused)
+        {
+            this->on_Action_System_Pause();
+        }
+        return;
+    }
+
+    diskRom = dialog.selectedFiles().first();
+
+    if (this->ui_Widgets->currentIndex() != 0)
+    {
+        this->ui_NoSwitchToRomBrowser = true;
+    }
+
+    this->emulationThread_Launch(cartRom, diskRom);
 }
 
 void MainWindow::on_Action_File_EndEmulation(void)
diff --git a/Source/RMG/UserInterface/MainWindow.hpp b/Source/RMG/UserInterface/MainWindow.hpp
index 4e140c5a..5d05ef1f 100644
--- a/Source/RMG/UserInterface/MainWindow.hpp
+++ b/Source/RMG/UserInterface/MainWindow.hpp
@@ -109,6 +109,7 @@ class MainWindow : public QMainWindow
 
     void emulationThread_Init(void);
     void emulationThread_Connect(void);
+    void emulationThread_Launch(QString, QString);
     void emulationThread_Launch(QString);
 
     void menuBar_Actions_Init(void);
diff --git a/Source/RMG/Utilities/Settings.cpp b/Source/RMG/Utilities/Settings.cpp
index 31ba2e4a..b04e6412 100644
--- a/Source/RMG/Utilities/Settings.cpp
+++ b/Source/RMG/Utilities/Settings.cpp
@@ -300,6 +300,10 @@ Setting_t Settings::getSetting(SettingsID id)
         setting = {M64P_SECTION, "SharedDataPath", "Data", "", true};
         break;
 
+    case SettingsID::Core_64DD_RomFile:
+        setting = {M64P_SECTION, "64DD ROM File", "", "", false};
+        break;
+
     case SettingsID::Game_DisableExtraMem:
         setting = {"", "DisableExtraMem", false, "", false};
         break;
diff --git a/Source/RMG/Utilities/SettingsID.hpp b/Source/RMG/Utilities/SettingsID.hpp
index e3c2c325..1250c4bd 100644
--- a/Source/RMG/Utilities/SettingsID.hpp
+++ b/Source/RMG/Utilities/SettingsID.hpp
@@ -49,6 +49,9 @@ enum SettingsID
     Core_UserDataDirOverride,
     Core_UserCacheDirOverride,
 
+    // Core 64DD ROM Settings
+    Core_64DD_RomFile,
+
     // (mupen64plus) Core Settings
     Core_OverrideGameSpecificSettings,
     Core_RandomizeInterrupt,