diff --git a/Makefile.wii b/Makefile.wii
index d68623b..6eb9481 100644
--- a/Makefile.wii
+++ b/Makefile.wii
@@ -34,7 +34,7 @@ LDFLAGS	=	$(MACHDEP) -Wl,-Map,$(notdir $@).map
 #---------------------------------------------------------------------------------
 # any extra libraries we wish to link with the project
 #---------------------------------------------------------------------------------
-LIBS	:=	-lfat -lwiiuse -lbte -logc -lm -lz -lsamplerate
+LIBS	:=	-ldi -lfat -lwiiuse -lbte -logc -lm -lz -lsamplerate
 
 #---------------------------------------------------------------------------------
 # list of directories containing libraries, this must be the top level containing
diff --git a/source/ngc/gui/dvd.c b/source/ngc/gui/dvd.c
index 21b3e55..d402392 100644
--- a/source/ngc/gui/dvd.c
+++ b/source/ngc/gui/dvd.c
@@ -15,32 +15,31 @@
  * To keep libOGC stable, make sure you call DVD_Init before using
  * these functions.
  ***************************************************************************/
-
 #include "shared.h"
+#ifdef HW_RVL
+#include "di/di.h"
+#endif
 
-#ifdef HW_DOL
-#include "dvd.h"
 
-u64 DvdMaxOffset = 0x57057C00;
-
-/** DVD I/O Address base **/
-static vu32* const dvd = (u32*)0xCC006000;
-static unsigned char *inquiry=(unsigned char *)0x80000004;
-
-/** Due to lack of memory, we'll use this little 2k keyhole for all DVD operations **/
-unsigned char DVDreadbuffer[2048] ATTRIBUTE_ALIGN (32);
+#ifndef HW_RVL
+static u64 DvdMaxOffset = 0x57057C00;              /* 1.4 GB max. */
+static vu32* const dvd = (u32*)0xCC006000;  /* DVD I/O Address base */
+static u8 *inquiry=(unsigned char *)0x80000004;
 
 #else
-#include "wdvd.h"
-u64 DvdMaxOffset = 0x118244F00LL;
+static u64 DvdMaxOffset = 0x118244F00LL;           /* 4.7 GB max. */
 #endif
 
+/* 2k buffer for all DVD operations */
+u8 DVDreadbuffer[2048] ATTRIBUTE_ALIGN (32);
+
+
 /***************************************************************************
  * dvd_read
  *
  * Read DVD disc sectors
  ***************************************************************************/
-int dvd_read (void *dst, unsigned int len, u64 offset)
+u32 dvd_read (void *dst, u32 len, u64 offset)
 {
   /*** We only allow 2k reads **/
   if (len > 2048) return 0;
@@ -48,10 +47,10 @@ int dvd_read (void *dst, unsigned int len, u64 offset)
   /*** Let's not read past end of DVD ***/
   if(offset < DvdMaxOffset)
   {
-
-#ifdef HW_DOL
     unsigned char *buffer = (unsigned char *) (unsigned int) DVDreadbuffer;
     DCInvalidateRange((void *)buffer, len);
+
+#ifndef HW_RVL
     dvd[0] = 0x2E;
     dvd[1] = 0;
     dvd[2] = 0xA8000000;
@@ -63,46 +62,29 @@ int dvd_read (void *dst, unsigned int len, u64 offset)
 
     /*** Enable reading with DMA ***/
     while (dvd[7] & 1);
-    memcpy (dst, buffer, len);
 
     /*** Ensure it has completed ***/
     if (dvd[0] & 0x4) return 0;
-    
-    return 1;
 
-#elif WII_DVD
-    return WDVD_LowUnencryptedRead((unsigned char **)&dst, len, (u32)(offset >> 2));
+#else
+    int ret = DI_ReadDVD(buffer, len , (u32)(offset >> 2));
+    if (ret)
+    {
+      char msg[50];
+			u32 val;
+      DI_GetError(&val);
+			sprintf(msg, "DI Read Error: 0x%08X\n",val);
+      return 0;
+    }
 #endif
+
+    memcpy (dst, buffer, len);
+    return 1;
   }
 
   return 0; 
 }
 
-/****************************************************************************
- * uselessinquiry
- *
- * As the name suggests, this function is quite useless.
- * It's only purpose is to stop any pending DVD interrupts while we use the
- * memcard interface.
- *
- * libOGC tends to foul up if you don't, and sometimes does if you do!
- ****************************************************************************/
-#ifdef HW_DOL
-void uselessinquiry ()
-{
-  dvd[0] = 0;
-  dvd[1] = 0;
-  dvd[2] = 0x12000000;
-  dvd[3] = 0;
-  dvd[4] = 0x20;
-  dvd[5] = 0x80000000;
-  dvd[6] = 0x20;
-  dvd[7] = 1;
-
-  while (dvd[7] & 1);
-}
-#endif
-
 /****************************************************************************
  * dvd_motor_off
  *
@@ -110,9 +92,9 @@ void uselessinquiry ()
  *
  * This can be used to prevent the Disc from spinning during playtime
  ****************************************************************************/
-#ifdef HW_DOL
 void dvd_motor_off( )
 {
+#ifndef HW_RVL
 	dvd[0] = 0x2e;
 	dvd[1] = 0;
 	dvd[2] = 0xe3000000;
@@ -126,8 +108,35 @@ void dvd_motor_off( )
 	/*** PSO Stops blackscreen at reload ***/
 	dvd[0] = 0x14;
 	dvd[1] = 0;
-}
+
+#else
+  DI_StopMotor();
 #endif
+}
+
+#ifndef HW_RVL
+/****************************************************************************
+ * uselessinquiry
+ *
+ * As the name suggests, this function is quite useless.
+ * It's only purpose is to stop any pending DVD interrupts while we use the
+ * memcard interface.
+ *
+ * libOGC tends to foul up if you don't, and sometimes does if you do!
+ ****************************************************************************/
+void uselessinquiry ()
+{
+  dvd[0] = 0;
+  dvd[1] = 0;
+  dvd[2] = 0x12000000;
+  dvd[3] = 0;
+  dvd[4] = 0x20;
+  dvd[5] = 0x80000000;
+  dvd[6] = 0x20;
+  dvd[7] = 1;
+
+  while (dvd[7] & 1);
+}
 
 /****************************************************************************
  * dvd_drive_detect()
@@ -135,7 +144,6 @@ void dvd_motor_off( )
  * Detect the DVD Drive Type
  *
  ****************************************************************************/
-#ifdef HW_DOL
 void dvd_drive_detect()
 {
   dvd[0] = 0x2e;
diff --git a/source/ngc/gui/dvd.h b/source/ngc/gui/dvd.h
index 6885e59..c7728d9 100644
--- a/source/ngc/gui/dvd.h
+++ b/source/ngc/gui/dvd.h
@@ -15,9 +15,15 @@
  * To keep libOGC stable, make sure you call DVD_Init before using
  * these functions.
  ***************************************************************************/
+#ifndef _DVD_H_
+#define _DVD_H_
 
-extern int dvd_read (void *dst, unsigned int len, u64 offset);
-extern void uselessinquiry ();
+extern u32 dvd_read (void *dst, u32 len, u64 offset);
 extern void dvd_motor_off ();
-extern void dvd_drive_detect();
 
+#ifndef HW_RVL
+extern void uselessinquiry ();
+extern void dvd_drive_detect();
+#endif
+
+#endif
diff --git a/source/ngc/gui/fileio.h b/source/ngc/gui/fileio.h
index c799d2e..8941670 100644
--- a/source/ngc/gui/fileio.h
+++ b/source/ngc/gui/fileio.h
@@ -5,8 +5,8 @@
  * Only partial support is included, in that only the first file within the archive
  * is considered to be a ROM image.
  ***************************************************************************/
-#ifndef _UNZIP_H_
-#define _UNZIP_H_
+#ifndef _FILEIO_H_
+#define _FILEIO_H_
 
 extern int IsZipFile (char *buffer);
 int UnZipDVD (unsigned char *outbuffer, u64 discoffset, int length);
diff --git a/source/ngc/gui/filesel.c b/source/ngc/gui/filesel.c
index 8774ac5..c261abc 100644
--- a/source/ngc/gui/filesel.c
+++ b/source/ngc/gui/filesel.c
@@ -11,11 +11,14 @@
  *
  ***************************************************************************/
 #include "shared.h"
-#include "dvd.h"
 #include "iso9660.h"
 #include "font.h"
 #include "fileio.h"
 #include "history.h"
+#include "dvd.h"
+#ifdef HW_RVL
+#include "di/di.h"
+#endif
 
 #define PAGESIZE 12
 
@@ -31,12 +34,8 @@ static u8 UseSDCARD = 0;
 static u8 UseHistory = 0;
 static int LoadFile (unsigned char *buffer);
 
-/* globals */
-FILE *sdfile;
-
-
 /***************************************************************************
- * FileSortCallback
+ * FileSortCallback (Marty Disibio)
  *
  * Quick sort callback to sort file entries with the following order:
  *   .
@@ -416,10 +415,23 @@ void OpenDVD ()
   
   if (!getpvd())
   {
-		ShowAction("Mounting DVD ... Wait");
+		/* mount DVD */
+    ShowAction("Mounting DVD ... Wait");
+
 #ifndef HW_RVL
 		DVD_Mount();
-#endif
+#else
+	  DI_Mount();
+	  while(DI_GetStatus() & DVD_INIT);
+    if (!(DI_GetStatus() & DVD_READY))
+    {
+      char msg[50];
+      sprintf(msg, "DI Status Error: 0x%08X\n",DI_GetStatus());
+      WaitPrompt(msg);
+      return;
+    }
+#endif      
+          
     haveDVDdir = 0;
 		if (!getpvd())
 		{
@@ -494,6 +506,11 @@ int OpenSD ()
   return 1;
 }
   
+/****************************************************************************
+ * OpenHistory
+ *
+ * Function to load a recent file from SDCARD (Marty Disibio)
+ ****************************************************************************/ 
 void OpenHistory()
 {
 	int i;
@@ -501,19 +518,15 @@ void OpenHistory()
 	UseSDCARD = 1;
 	UseHistory = 1;
 
-  /* don't mess with SD entries */
-  haveSDdir = 0;
+  /* don't mess with other entries */
+  haveSDdir   = 0;
+  haveDVDdir  = 0;
 
   /* reinit selector */
   old_selection = selection = offset = old_offset = 0;
 
-    /* Reset SDCARD root directory */
-	/* Make this empty because the history */
-	/* entry will contain the entire path. */
-    /*sprintf (rootSDdir, "");*/
-	
-	/* Recreate the file listing from the history
-     * as if all of the roms were in the same directory. */
+  /* Recreate the file listing from the history
+   * as if all of the roms were in the same directory. */
 	ShowAction("Reading Files ...");
 
 	maxfiles = 0;
@@ -561,6 +574,7 @@ static int LoadFile (unsigned char *buffer)
   u64 discoffset = 0;
   char readbuffer[2048];
   char fname[MAXPATHLEN];
+  FILE *sdfile = NULL;
  
   if (rootdirlength == 0) return 0;
 
diff --git a/source/ngc/gui/font.h b/source/ngc/gui/font.h
index af9838a..8f064a8 100644
--- a/source/ngc/gui/font.h
+++ b/source/ngc/gui/font.h
@@ -4,6 +4,8 @@
  * Based on Qoob MP3 Player Font
  * Added IPL font extraction
  *****************************************************************************/
+#ifndef _FONT_H
+#define _FONT_H
 
 extern void init_font(void);
 extern void WriteCentre_HL( int y, char *string);
@@ -21,3 +23,5 @@ extern int fheight;
 extern int font_size[256];
 extern u16 back_framewidth;
 extern u8 SILENT;
+
+#endif
diff --git a/source/ngc/gui/iso9660.h b/source/ngc/gui/iso9660.h
index 6cf153c..ad2d76e 100644
--- a/source/ngc/gui/iso9660.h
+++ b/source/ngc/gui/iso9660.h
@@ -5,8 +5,8 @@
  * This is not intended as a complete guide to ISO9660.
  * Here I use the bare minimum!
  ***************************************************************************/
- #ifndef _ISO9660_H
- #define _ISO9660_H
+#ifndef _ISO9660_H
+#define _ISO9660_H
 
 #define MAXJOLIET 256
 #define MAXFILES 1000			/** Restrict to 1000 files per dir **/
diff --git a/source/ngc/gui/memfile.c b/source/ngc/gui/memfile.c
index cb7ba34..349b349 100644
--- a/source/ngc/gui/memfile.c
+++ b/source/ngc/gui/memfile.c
@@ -4,9 +4,11 @@
  *
  ***************************************************************************/
 #include "shared.h"
-#include "dvd.h"
 #include "font.h"
-#include "saveicon.h"	/*** Nice little icon - thanks brakken! ***/
+#include "saveicon.h"
+#ifndef HW_RVL
+#include "dvd.h"
+#endif
 
 #include <fat.h>
 #include <sys/dir.h>
diff --git a/source/ngc/ngc.c b/source/ngc/ngc.c
index f69fce6..e6ab2dd 100644
--- a/source/ngc/ngc.c
+++ b/source/ngc/ngc.c
@@ -19,12 +19,12 @@
  ***************************************************************************/
 #include "shared.h"
 #include "gcaram.h"
-#include "dvd.h"
 #include "font.h"
 #include "history.h"
-
-#ifdef WII_DVD
-#include "wdvd.h"
+#ifndef HW_RVL
+#include "dvd.h"
+#else
+#include "di/di.h"
 #endif
 
 /***************************************************************************
@@ -46,6 +46,13 @@ static void load_bios()
 
   /* update BIOS flags */
   config.bios_enabled |= 2;
+
+  if (config.bios_enabled == 3)
+  {
+    /* initialize system */
+    system_init ();
+    audio_init(48000);
+  }
 }
 
 static void init_machine()
@@ -53,9 +60,6 @@ static void init_machine()
   /* Allocate cart_rom here */
   cart_rom = memalign(32, 0xA00000);
 
-  /* BIOS support */
-  load_bios();
-  
   /* allocate global work bitmap */
   memset (&bitmap, 0, sizeof (bitmap));
   bitmap.width  = 360;
@@ -73,6 +77,9 @@ static void init_machine()
   /* default system */
   input.system[0] = SYSTEM_GAMEPAD;
   input.system[1] = SYSTEM_GAMEPAD;
+
+  /* BIOS support */
+  load_bios();
 }
 
 /**************************************************
@@ -96,35 +103,25 @@ int frameticker = 0;
 
 int main (int argc, char *argv[])
 {
+#ifdef HW_RVL
+	/* initialize Wii DVD interface first */
+  DI_Init();
+#endif
+
   u16 usBetweenFrames;
   long long now, prev;
   int RenderedFrameCount = 0;
   int FrameCount = 0;
   
-  /* load hacked IOS with full access to DVD interface (WIP) */
-#ifdef WII_DVD
-	IOS_ReloadIOS(5);
-#endif
-
   /* Initialize OGC subsystems */
   ogc_video__init();
   ogc_input__init();
   ogc_audio__init();
 
-  /* Initialize DVD interface */
 #ifndef HW_RVL
+  /* Initialize GC DVD interface */
   DVD_Init ();
   dvd_drive_detect();
-
-#elif WII_DVD
-  if (WDVD_Init())
-  {
-    if (WDVD_Reset())
-    {
-      u64 id;
-      WDVD_LowReadDiskId(&id);
-	  }
-	}
 #endif
 
   /* Initialize SDCARD Interface (LibFAT) */
diff --git a/source/ngc/wdvd.c b/source/ngc/wdvd.c
deleted file mode 100644
index aca9fae..0000000
--- a/source/ngc/wdvd.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- *  Wii DVD interface API
- *  Copyright (C) 2008 Jeff Epler <jepler@unpythonic.net>
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation; either
- *  version 2.1 of the License, or (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-#ifdef WII_DVD
-#include <ogc/ipc.h>
-#include <string.h>
-#include <ogc/system.h>
-#include "wdvd.h"
-
-static int di_fd = -1;
-static s32 di_hid = 0;
-
-
-
-#include <stdio.h>
-#define DEBUG
-
-#ifdef DEBUG
-#define debug_printf printf
-#define debug_wait printf
-#else
-#define debug_printf(...) ;
-#define debug_wait(...) ;
-#endif
-
-bool WDVD_Init() 
-{ 
-    if(di_fd >= 0) return 1;
-
-    di_fd = IOS_Open("/dev/do", 0);
-    if(di_fd < 0) {
-        debug_printf("IOS_Open(/dev/di) failed with code %d\n", di_fd);
-        return 0;
-    }
-    
-    di_hid = iosCreateHeap(0x10000);
-    if(!di_hid) {
-        IOS_Close(di_fd);
-        di_fd = -1;
-        debug_printf("iosCreateHeap(0x20) failed with code %d\n", di_hid);
-        return 0;
-    }
-
-    debug_printf("fd=%d hid=%d\n", di_fd, di_hid);
-    return 1;
-}
-
-bool WDVD_Reset() 
-{
-	bool result = false;
-    char *inbuf = (char*)iosAlloc(di_hid, 0x20);
-    char *outbuf = (char*)iosAlloc(di_hid, 0x20);
-    if(!inbuf || !outbuf) 
-		goto out;
-
-    ((u32*)inbuf)[0x00] = 0x8A000000;
-    ((u32*)inbuf)[0x01] = 1;
-
-    result = IOS_Ioctl( di_fd, 0x8A, inbuf, 0x20, outbuf, 0x20);
-out:
-    if(outbuf) iosFree(di_hid, outbuf);
-    if(inbuf)  iosFree(di_hid, inbuf);
-    return result;
-}
-
-#define max(a,b) ((a) > (b) ? (a) : (b))
-
-unsigned char* ios_command = 0;
-unsigned char* ios_out = 0;
-unsigned int ios_outlen = 0;
-
-void WDVD_AllocCommand()
-{
-	if (ios_command == 0)
-		ios_command = (unsigned char*)iosAlloc(di_hid, 0x20);
-}
-
-void WDVD_AllocOutput(unsigned int length)
-{
-	if (ios_out == 0 || ios_outlen != length)
-	{
-		if (ios_out)
-			iosFree(di_hid, ios_out);
-
-		ios_out = (unsigned char*)iosAlloc(di_hid, max(length, 0x20));
-		ios_outlen = length;
-	}
-}
-
-int WDVD_LowUnencryptedRead(unsigned char **poutbuf, u32 len, u32 offset) 
-{
-	WDVD_AllocCommand();
-	WDVD_AllocOutput(len);
-
-	unsigned char* inbuf = ios_command;
-	unsigned char* outbuf = ios_out;
-
-	*poutbuf = ios_out;
-    int result = 0;
-
-    if(!inbuf || !outbuf) { result = -1; goto out; }
-
-    ((u32*)inbuf)[0] = 0x8d000000;
-    ((u32*)inbuf)[1] = len;
-    ((u32*)inbuf)[2] = offset;
-
-//    memset(outbuf, 0x00, len);
-
-    result = IOS_Ioctl(di_fd, 0x8d, inbuf, 0x20, outbuf, len);
-
-	if (result != 1)
-		debug_printf("-> %d\n", result);
-
-//    if(result >= 0)  {
-//        memcpy(buf, outbuf, len);
-//    }
-
-out:
-    //if(outbuf) iosFree(di_hid, outbuf);
-    //if(inbuf)  iosFree(di_hid, inbuf);
-
-    return result;
-}
-
-int WDVD_LowReadDiskId(u64 *id) 
-{
-    int result;
-    char *inbuf = (char*)iosAlloc(di_hid, 0x20);
-    char *outbuf = (char*)iosAlloc(di_hid, 0x20);
-    if(!inbuf || !outbuf) { result = -1; goto out; }
-    ((u32*)inbuf)[0] = 0x70000000; 
-
-	*(u64*)outbuf = 0;
-    result = IOS_Ioctl(di_fd, 0x8D, inbuf, 0x20, outbuf, 0x20);
-
-    *id = *(u64*) outbuf;
-
-out:
-    if(inbuf) iosFree(di_hid, inbuf);
-    if(outbuf) iosFree(di_hid, outbuf);
-
-    return result;
-}
-#endif
diff --git a/source/ngc/wdvd.h b/source/ngc/wdvd.h
deleted file mode 100644
index 4f1af8a..0000000
--- a/source/ngc/wdvd.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- *  Wii DVD interface API
- *  Copyright (C) 2008 Jeff Epler <jepler@unpythonic.net>
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation; either
- *  version 2.1 of the License, or (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-#ifndef _WDVD_H_
-#define _WDVD_H_
-bool WDVD_Init();
-bool WDVD_Reset();
-
-int WDVD_LowUnencryptedRead(unsigned char **outbuf, u32 len, u32 offset);
-int WDVD_LowReadDiskId(u64 *id);
-#endif