diff --git a/source/loader/gc_disc.cpp b/source/loader/gc_disc.cpp
index a3b90e35..955564d7 100644
--- a/source/loader/gc_disc.cpp
+++ b/source/loader/gc_disc.cpp
@@ -1,9 +1,34 @@
+/***************************************************************************
+ * Copyright (C) 2012
+ * by OverjoY for Wiiflow
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any
+ * damages arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any
+ * purpose, including commercial applications, and to alter it and
+ * redistribute it freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you
+ * must not claim that you wrote the original software. If you use
+ * this software in a product, an acknowledgment in the product
+ * documentation would be appreciated but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and
+ * must not be misrepresented as being the original software.
+ *
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+ *
+ * gc_disc.cpp
+ *
+ ***************************************************************************/
+ 
 #include <stdio.h>
-#include <string.h>
 #include <malloc.h>
 #include <ogcsys.h>
-#include <dirent.h>
-#include <sys/statvfs.h> 
+#include <sys/statvfs.h>
 
 #include "gc_disc.hpp"
 #include "DeviceHandler.hpp"
@@ -11,68 +36,342 @@
 #include "utils.h"
 #include "wdvd.h"
 #include "text.hpp"
+#include "gecko.h"
 
-s32 __DiscReadRaw(void *outbuf, u32 offset, u32 length)
-{
-	return WDVD_UnencryptedRead(outbuf, length, offset);
+static u8 *FSTable ALIGNED(32);
+
+s32 GCDump::__DiscReadRaw(void *outbuf, u32 offset, u32 length)
+{	
+	while(1)
+	{
+		*(u32*)0xCD0000C0 |= 0x20;
+		gc_error = 0;
+		s32 ret = WDVD_UnencryptedRead(outbuf, length, offset);
+		if( ret != 0 )
+		{
+			WDVD_LowRequestError(&gc_error);			
+			if(gc_error == 0x30200 || gc_error == 0x30201 || gc_error == 0x31100)
+			{
+				if(gc_retry >= gc_nbrretry)
+				{
+					if(!skiponerror)
+					{
+						*(u32*)0xCD0000C0 &= ~0x20;
+						return gc_error;
+					}
+					else
+					{
+						gc_retry = 0;
+						gc_skipped++;
+						gprintf("Read error (%x) at offset: 0x%08x. Skipping %d bytes\n", gc_error, offset, length);
+						*(u32*)0xCD0000C0 &= ~0x20;
+						return 1;
+					}
+				}
+				gc_retry++;
+			}
+			else
+			{
+				gprintf("Read error(%x) at offset: 0x%08x.\n", gc_error, offset);
+				*(u32*)0xCD0000C0 &= ~0x20;
+				return 0;
+			}
+		}
+		else
+		{
+			*(u32*)0xCD0000C0 &= ~0x20;
+			gc_retry = 0;
+			return ret;
+		}
+	}
+	return -1;		
 }
 
-s32 GC_GameDumper(progress_callback_t spinner, void *spinner_data)
+s32 GCDump::__DiscWrite(char * path, u32 offset, u32 length, progress_callback_t spinner, void *spinner_data)
+{
+	gprintf("__DiscWrite(%s, 0x%08x, %x)\n", path, offset, length);
+	u8 *ReadBuffer = (u8 *)memalign(32, gc_readsize);
+	u32 toread = 0;
+	u32 wrote = 0;
+	FILE *f = fopen(path, "ab");
+	
+	while(length)
+	{
+		toread = gc_readsize;
+		if(toread > length)
+			toread = length;
+			
+		s32 ret = __DiscReadRaw(ReadBuffer, offset, (toread+31)&(~31));
+		if( ret == 1 )
+			memset(ReadBuffer, 0, gc_readsize);
+		
+		else if( ret > 1 )
+			return 0;
+			
+		fwrite(ReadBuffer, 1, toread, f);		
+		
+		wrote += toread;
+		offset += toread;
+		length -= toread;
+		if(spinner)
+			spinner(wrote, DiscSize, spinner_data);
+	}
+	
+	fclose(f);
+	free(ReadBuffer);
+	return wrote;
+}
+
+s32 GCDump::__DiscWriteAligned(char * path, u32 offset, u32 length)
+{
+	u8 *ReadBuffer = (u8 *)memalign(32, gc_readsize+4);
+	u32 toread = 0;
+	u32 wrote = 0;
+	FILE *f = fopen(path, "ab");
+	
+	while(length)
+	{
+		toread = gc_readsize;
+		if(toread > length)
+			toread = length;
+			
+		s32 ret = __DiscReadRaw(ReadBuffer, offset, (toread+31)&(~31));
+		if( ret == 1 )
+			memset(ReadBuffer, 0, gc_readsize);
+
+		
+		if( ret > 1 )
+			return -1;
+
+		if(aligned)
+		{
+			fwrite(ReadBuffer, 1, (toread+31)&(~31), f);		
+			wrote += (toread+31)&(~31);
+		}
+		else
+		{
+			fwrite(ReadBuffer, 1, (toread+3)&(~3), f);		
+			wrote += (toread+3)&(~3);
+		}
+		offset += toread;
+		length -= toread;
+	}
+	
+	fclose(f);
+	free(ReadBuffer);
+	return wrote;
+}
+
+s32 GCDump::DumpGame(progress_callback_t spinner, void *spinner_data)
 {	
 	static gc_discHdr gcheader ATTRIBUTE_ALIGN(32);
+	
+	u8 *ReadBuffer = (u8 *)memalign(32, 0x40);
+	u8 *FSTBuffer;
+	u32 wrote = 0;
 
-	FILE *f;
-	u8 *ReadBuffer = (u8 *)memalign(32, READSIZE);
-	u32 DiscSec = 0;
 	u32 ApploaderSize = 0;
+	u32 DOLOffset = 0;
+	u32 DOLSize = 0;
+	u32 FSTOffset = 0;
+	u32 FSTSize = 0;
+	u32 FSTEnt = 0;
+	u32 GamePartOffset = 0;
+	u32 DataSize = 0;	
+	char *FSTNameOff = (char *)NULL;
+	
 	char folder[MAX_FAT_PATH];
 	bzero(folder, MAX_FAT_PATH);	
 	char gamepath[MAX_FAT_PATH];
 	bzero(gamepath, MAX_FAT_PATH);
 	
-	Disc_ReadGCHeader(&gcheader);
+	s32 ret = Disc_ReadGCHeader(&gcheader);
 	Asciify2(gcheader.title);
 
 	snprintf(folder, sizeof(folder), "%s:/games/%s [%s]", DeviceName[SD], gcheader.title, (char *)gcheader.id);
 	makedir((char *)folder);
 	
-	snprintf(gamepath, sizeof(gamepath), "%s/game.iso", folder);
-	f = fopen(gamepath, "wb");
-	while( DiscSec < 0xAE0B )
+	if(writeexfiles)
 	{
-		__DiscReadRaw(ReadBuffer, DiscSec*READSIZE, READSIZE);
-		fwrite(ReadBuffer, 1, READSIZE, f);
-		spinner(DiscSec, 0xAE0B, spinner_data);
-		DiscSec++;
+		snprintf(folder, sizeof(folder), "%s:/games/%s [%s]/sys", DeviceName[SD], gcheader.title, (char *)gcheader.id);	
+		makedir((char *)folder);
 	}
-	fclose(f);	
 	
-	snprintf(folder, sizeof(folder), "%s:/games/%s [%s]/sys", DeviceName[SD], gcheader.title, (char *)gcheader.id);	
-	makedir((char *)folder);
-	snprintf(gamepath, sizeof(gamepath), "%s/boot.bin", folder);	
-	__DiscReadRaw(ReadBuffer, 0, 0x440);
+	ret = __DiscReadRaw(ReadBuffer, 0x400, 0x40);
+	if(ret > 0)
+		return 0x31100;
 	
-	f = fopen(gamepath, "wb");
-	fwrite(ReadBuffer, 1, 0x440, f);
-	fclose(f);
+	ApploaderSize = *(vu32*)(ReadBuffer);
+	DOLOffset = *(vu32*)(ReadBuffer+0x20);
+	FSTOffset = *(vu32*)(ReadBuffer+0x24);
+	FSTSize = *(vu32*)(ReadBuffer+0x28);
+	GamePartOffset = *(vu32*)(ReadBuffer+0x34);
+	DataSize = *(vu32*)(ReadBuffer+0x38);
+	
+	free(ReadBuffer);
+	
+	DOLSize = FSTOffset - DOLOffset;
+	DiscSize =  DataSize + GamePartOffset;
+	
+	FSTBuffer = (u8 *)memalign(32, (FSTSize+31)&(~31));
 
-	ApploaderSize = *(vu32*)(ReadBuffer+0x400);
+	ret = __DiscReadRaw(FSTBuffer, FSTOffset, (FSTSize+31)&(~31));
+	if(ret > 0)
+		return 0x31100;
+		
+	FSTable = (u8*)FSTBuffer;
+
+	FSTEnt = *(u32*)(FSTable+0x08);
 	
-	snprintf(gamepath, sizeof(gamepath), "%s/bi2.bin", folder);
-	__DiscReadRaw(ReadBuffer, 0x440, 0x2000);
+	FSTNameOff = (char*)(FSTable + FSTEnt * 0x0C);
+	FST *fst = (FST *)(FSTable);
 	
-	f = fopen(gamepath, "wb");
-	fwrite(ReadBuffer, 1, 0x2000, f);
-	fclose(f);
+	gprintf("Dumping: %s %s\n", gcheader.title, compressed ? "compressed" : "full");
 	
-	snprintf(gamepath, sizeof(gamepath), "%s/apploader.img", folder);
-	__DiscReadRaw(ReadBuffer, 0x2440, ApploaderSize);
+	gprintf("Apploader size : %d\n", ApploaderSize);
+	gprintf("DOL offset     : 0x%08x\n", DOLOffset);
+	gprintf("DOL size       : %d\n", DOLSize);
+	gprintf("FST offset     : 0x%08x\n", FSTOffset);
+	gprintf("FST size       : %d\n", FSTSize);
+	gprintf("Num FST entries: %d\n", FSTEnt);
+	gprintf("Disc size      : %d\n", DiscSize);
 	
-	f = fopen(gamepath, "wb");
-	fwrite(ReadBuffer, 1, ApploaderSize, f);
-	fclose(f);
+	if(writeexfiles)
+	{
+		gprintf("Writing %s/boot.bin\n", folder);
+		snprintf(gamepath, sizeof(gamepath), "%s/boot.bin", folder);
+		__DiscWrite(gamepath, 0, 0x440, spinner, spinner_data);
+
+		gprintf("Writing %s/bi2.bin\n", folder);
+		snprintf(gamepath, sizeof(gamepath), "%s/bi2.bin", folder);	
+		__DiscWrite(gamepath, 0x440, 0x2000, spinner, spinner_data);
 	
-	free(ReadBuffer);	
+		gprintf("Writing %s/apploader.img\n", folder);
+		snprintf(gamepath, sizeof(gamepath), "%s/apploader.img", folder);	
+		__DiscWrite(gamepath, 0x2440, ApploaderSize, spinner, spinner_data);
+	}
 	
-	return 0;	
+	snprintf(gamepath, sizeof(gamepath), "%s:/games/%s [%s]/game.iso", DeviceName[SD], gcheader.title, (char *)gcheader.id);
+	
+	gprintf("Writing %s\n", gamepath);
+	if(compressed)
+	{	
+		ret = __DiscWriteAligned(gamepath, 0, GamePartOffset);	
+		wrote += ret;
+	
+		u32 i;
+	
+		for( i=1; i < FSTEnt; ++i )
+		{
+			if( fst[i].Type )
+			{
+				continue;
+			} 
+			else 
+			{	
+				ret = __DiscWriteAligned(gamepath, fst[i].FileOffset, fst[i].FileLength);
+				gprintf("Writing: %d/%d: %s from 0x%08x to 0x%08x\n", i, FSTEnt, FSTNameOff + fst[i].NameOffset, fst[i].FileOffset, wrote);
+				if( ret >= 0 )
+				{
+					fst[i].FileOffset = wrote;
+					wrote += ret;
+					spinner(i, FSTEnt, spinner_data);
+				}
+				else
+				{
+					spinner(FSTEnt, FSTEnt, spinner_data);
+					free(FSTBuffer);
+					return gc_error;
+				}
+			}
+		}	
+	
+		gprintf("Updating FST\n");
+		
+		FILE *f = fopen(gamepath, "r+");
+		fseek(f, FSTOffset, SEEK_SET);
+		fwrite(fst, 1, FSTSize, f);
+		fclose(f);
+		
+		gprintf("Done!! Disc old size: %d, disc new size: %d, saved: %d\n", DiscSize, wrote, DiscSize - wrote);
+	}
+	else
+	{
+		ret = __DiscWrite(gamepath, 0, DiscSize, spinner, spinner_data);
+		if( ret < 0 )
+		{
+			free(FSTBuffer);
+			return gc_error;
+		}
+		gprintf("Done!! Disc size: %d\n", DiscSize);
+	}
+
+	free(FSTBuffer);
+	
+	return gc_skipped;	
+}
+
+s32 GCDump::CheckSpace(u32 *needed, bool comp)
+{
+	u8 *ReadBuffer = (u8 *)memalign(32, 0x40);	
+	
+	s32 ret = __DiscReadRaw(ReadBuffer, 0x400, 0x40);
+	if(ret > 0)
+		return 1;
+	
+	u32 ApploaderSize = *(vu32*)(ReadBuffer);
+	u32 FSTOffset = *(vu32*)(ReadBuffer+0x24);
+	u32 FSTSize = *(vu32*)(ReadBuffer+0x28);
+	u32 GamePartOffset = *(vu32*)(ReadBuffer+0x34);
+	u32 DataSize = *(vu32*)(ReadBuffer+0x38);
+	
+	u32 DiscSize =  DataSize + GamePartOffset;
+	
+	free(ReadBuffer);
+	
+	u32 size = 0;
+	
+	if(writeexfiles)
+	{
+		size += 0xa440;
+		size += ApploaderSize;
+	}
+	
+	if(!comp)
+	{
+		size += DiscSize;		
+	}
+	else
+	{
+		u8 *FSTBuffer = (u8 *)memalign(32, (FSTSize+31)&(~31));
+
+		ret = __DiscReadRaw(FSTBuffer, FSTOffset, (FSTSize+31)&(~31));
+		if(ret > 0)
+		{
+			free(FSTBuffer);
+			return 1;
+		}
+		
+		FSTable = (u8*)FSTBuffer;
+		u32 FSTEnt = *(u32*)(FSTable+0x08);
+		FST *fst = (FST *)(FSTable);
+		
+		u32 i;
+	
+		for( i=1; i < FSTEnt; ++i )
+		{
+			if( fst[i].Type )
+			{
+				continue;
+			} 
+			else 
+			{	
+				size += (fst[i].FileLength+31)&(~31);
+			}
+		}
+		free(FSTBuffer);		
+	}
+	*needed = size/0x8000;
+	gprintf("Free space needed on SD: %d bytes (%x blocks)\n", size, size/0x8000);
+	return 0;
 }
\ No newline at end of file
diff --git a/source/loader/gc_disc.hpp b/source/loader/gc_disc.hpp
index bf3771a9..ee71a98c 100644
--- a/source/loader/gc_disc.hpp
+++ b/source/loader/gc_disc.hpp
@@ -1,9 +1,89 @@
+/***************************************************************************
+ * Copyright (C) 2012
+ * by OverjoY for Wiiflow
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any
+ * damages arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any
+ * purpose, including commercial applications, and to alter it and
+ * redistribute it freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you
+ * must not claim that you wrote the original software. If you use
+ * this software in a product, an acknowledgment in the product
+ * documentation would be appreciated but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and
+ * must not be misrepresented as being the original software.
+ *
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+ *
+ * gc_disc.hpp
+ *
+ ***************************************************************************/
+
 #ifndef GC_DISC_H_
 #define GC_DISC_H_
 
 typedef void (*progress_callback_t)(int status,int total,void *user_data);
 
-s32 GC_GameDumper(progress_callback_t spinner, void *spinner_data);
-s32 GC_DiskSpace(u64 *free);
-
+class GCDump
+{
+public:
+	void Init(bool skip, bool comp, bool wexf, bool align, u32 nretry, u32 rsize)
+	{
+		skiponerror = skip;
+		compressed = comp;
+		writeexfiles = wexf;
+		aligned = align;
+		gc_nbrretry = nretry;
+		gc_readsize = rsize;
+		gc_skipped = 0;
+	}
+	s32 DumpGame(progress_callback_t spinner, void *spinner_data);
+	s32 CheckSpace(u32 *needed, bool comp);
+private:
+	bool aligned;
+	bool skiponerror;
+	bool compressed;
+	bool writeexfiles;
+	u32 gc_nbrretry;
+	u32 gc_error;
+	u32 gc_retry;
+	u32 gc_skipped;
+	u32 gc_readsize;
+	u32 DiscSize;
+	typedef struct
+	{
+		union
+		{
+			struct
+			{
+				u32 Type		:8;
+				u32 NameOffset	:24;
+			};
+			u32 TypeName;
+		};
+		union
+		{
+			struct
+			{
+				u32 FileOffset;
+				u32 FileLength;
+			};
+			struct
+			{
+				u32 ParentOffset;
+				u32 NextOffset;
+			};
+			u32 entry[2];
+		};
+	} FST;
+	s32 __DiscReadRaw(void *outbuf, u32 offset, u32 length);
+	s32 __DiscWrite(char * path, u32 offset, u32 length, progress_callback_t spinner , void *spinner_data);
+	s32 __DiscWriteAligned(char * path, u32 offset, u32 length);
+};
 #endif
\ No newline at end of file
diff --git a/source/loader/utils.h b/source/loader/utils.h
index 3267a939..75475367 100644
--- a/source/loader/utils.h
+++ b/source/loader/utils.h
@@ -7,7 +7,6 @@
 #define MB_SIZE		1048576.0
 #define GB_SIZE		1073741824.0
 
-#define	READSIZE	(32*1024)
 #define MAX_FAT_PATH   1024
 
 /* Macros */
@@ -15,6 +14,7 @@
 
 #define ALIGN(x) (((x) + 3) & ~3)
 #define ALIGN32(x) (((x) + 31) & ~31)
+#define ALIGNED(x) __attribute__((aligned(x)))
 
 #define SMART_FREE(P)		{if(!!P)P.release();}
 #define SAFE_FREE(P)		{if(P != NULL){free(P);P = NULL;}}
diff --git a/source/loader/wdvd.c b/source/loader/wdvd.c
index 6c662da8..71b96bca 100644
--- a/source/loader/wdvd.c
+++ b/source/loader/wdvd.c
@@ -5,25 +5,26 @@
 #include "gecko.h"
 
 /* Constants */
-#define IOCTL_DI_READID		0x70
-#define IOCTL_DI_READ		0x71
-#define IOCTL_DI_WAITCVRCLOSE	0x79
-#define IOCTL_DI_GETCOVER	0x88
-#define IOCTL_DI_RESET		0x8A
-#define IOCTL_DI_OPENPART	0x8B
-#define IOCTL_DI_CLOSEPART	0x8C
-#define IOCTL_DI_UNENCREAD	0x8D
-#define IOCTL_DI_SEEK		0xAB
-#define IOCTL_DI_STOPLASER	0xD2
-#define IOCTL_DI_OFFSET		0xD9
-#define IOCTL_DI_DISC_BCA	0xDA
-#define IOCTL_DI_STOPMOTOR	0xE3
-#define IOCTL_DI_SETWBFSMODE	0xF4
+#define IOCTL_DI_READID                  0x70
+#define IOCTL_DI_READ                    0x71
+#define IOCTL_DI_WAITCVRCLOSE            0x79
+#define IOCTL_DI_GETCOVER                0x88
+#define IOCTL_DI_RESET                   0x8A
+#define IOCTL_DI_OPENPART                0x8B
+#define IOCTL_DI_CLOSEPART               0x8C
+#define IOCTL_DI_UNENCREAD               0x8D
+#define IOCTL_DI_SEEK                    0xAB
+#define IOCTL_DI_STOPLASER               0xD2
+#define IOCTL_DI_OFFSET                  0xD9
+#define IOCTL_DI_DISC_BCA                0xDA
+#define IOCTL_DI_REQUESTERROR            0xE0
+#define IOCTL_DI_STOPMOTOR               0xE3
+#define IOCTL_DI_SETWBFSMODE             0xF4
 #define IOCTL_DI_DVDLowAudioBufferConfig 0xE4
 
-#define IOCTL_DI_SETFRAG	0xF9
-#define IOCTL_DI_GETMODE	0xFA
-#define IOCTL_DI_HELLO		0xFB
+#define IOCTL_DI_SETFRAG                 0xF9
+#define IOCTL_DI_GETMODE                 0xFA
+#define IOCTL_DI_HELLO                   0xFB
 
 /* Variables */
 static u32 inbuf[8]  ATTRIBUTE_ALIGN(32);
@@ -271,6 +272,21 @@ s32 WDVD_Read(void *buf, u32 len, u64 offset)
 	return (ret == 1) ? 0 : -ret;
 }
 
+s32 WDVD_LowRequestError(u32 *error)
+{
+	memset(inbuf, 0, sizeof(inbuf));
+	
+	inbuf[0] = IOCTL_DI_REQUESTERROR << 24;
+	
+	s32 ret = IOS_Ioctl(di_fd, IOCTL_DI_REQUESTERROR, inbuf, sizeof(inbuf), outbuf, sizeof(outbuf));
+	if (ret < 0) return ret;
+	
+	if (ret == 1) 	
+		memcpy(error, outbuf, sizeof(u32));
+
+	return (ret == 1) ? 0 : -ret;
+}
+
 s32 WDVD_WaitForDisc(void)
 {
 	memset(inbuf, 0, sizeof(inbuf));
diff --git a/source/loader/wdvd.h b/source/loader/wdvd.h
index 5ed3615a..9a57da73 100644
--- a/source/loader/wdvd.h
+++ b/source/loader/wdvd.h
@@ -19,6 +19,7 @@ s32 WDVD_OpenPartition(u64 offset, void* Ticket, void* Certificate, unsigned int
 s32 WDVD_ClosePartition(void);
 s32 WDVD_UnencryptedRead(void *, u32, u64);
 s32 WDVD_Read(void *, u32, u64);
+s32 WDVD_LowRequestError(u32 *error);
 s32 WDVD_WaitForDisc(void);
 s32 WDVD_GetCoverStatus(u32 *);
 s32 WDVD_SetUSBMode(u32, const u8 *, s32);
diff --git a/source/menu/menu.hpp b/source/menu/menu.hpp
index fadc606f..f35fca1e 100644
--- a/source/menu/menu.hpp
+++ b/source/menu/menu.hpp
@@ -21,6 +21,7 @@
 #include "gct.h"
 #include "DeviceHandler.hpp"
 #include "musicplayer.h"
+#include "loader/gc_disc.hpp" 
 
 //Also in wbfs.h
 #define PART_FS_WBFS 0
@@ -66,6 +67,7 @@ private:
 	Config m_titles;
 	Config m_version;
 	Channels m_channels;
+	GCDump m_gcdump;
 	safe_vector<std::string> m_homebrewArgs;
 	SmartBuf m_base_font;
 	u32 m_base_font_size;
diff --git a/source/menu/menu_wbfs.cpp b/source/menu/menu_wbfs.cpp
index e3b516e6..8463c127 100644
--- a/source/menu/menu_wbfs.cpp
+++ b/source/menu/menu_wbfs.cpp
@@ -110,6 +110,15 @@ int CMenu::_GCgameInstaller(void *obj)
 {
 	CMenu &m = *(CMenu *)obj;
 	
+	bool skip = m.m_cfg.getBool("DML", "skip_on_error", false);
+	bool comp = m.m_cfg.getBool("DML", "compressed_dump", false);
+	bool wexf = m.m_cfg.getBool("DML", "write_ex_files", false);
+	bool alig = m.m_cfg.getBool("DML", "align_files", false);
+	u32 nretry = m.m_cfg.getUInt("DML", "num_retries", 5);
+	u32 rsize = 32768;
+	
+	m.m_gcdump.Init(skip, comp, wexf, alig, nretry, rsize);
+	
 	int ret;
 
 	if (!DeviceHandler::Instance()->IsInserted(SD))
@@ -123,29 +132,33 @@ int CMenu::_GCgameInstaller(void *obj)
 	statvfs("sd:/" , &stats);
 	
 	u64 free = (u64)stats.f_frsize * (u64)stats.f_bfree;
+	u32 needed = 0;
 	
-	int blockfree = free/0x8000;	
+	m.m_gcdump.CheckSpace(&needed, comp);
 	
-	if (blockfree <= 44556)
+	u32 blockfree = free/0x8000;	
+	
+	if (blockfree <= needed)
 	{
 		LWP_MutexLock(m.m_mutex);
-		m._setThrdMsg(wfmt(m._fmt("wbfsop11", L"Not enough space : 44557 blocks needed, %d available"), blockfree), 0.f);
+		m._setThrdMsg(wfmt(m._fmt("wbfsop11", L"Not enough space : %d blocks needed, %d available"), needed, blockfree), 0.f);
 		LWP_MutexUnlock(m.m_mutex);
 		ret = -1;
 	}
 	else
 	{
-
 		LWP_MutexLock(m.m_mutex);
 		m._setThrdMsg(L"", 0);
 		LWP_MutexUnlock(m.m_mutex);
 		
-		ret=0;	
-		
-		ret = GC_GameDumper(CMenu::_addDiscProgress, obj);
+		ret = m.m_gcdump.DumpGame(CMenu::_addDiscProgress, obj);
 		LWP_MutexLock(m.m_mutex);
-		if (ret == 0)
+		if(ret == 0)
 			m._setThrdMsg(m._t("wbfsop8", L"Game installed"), 1.f);
+		else if( ret >= 0x30200)
+			m._setThrdMsg(wfmt(m._fmt("wbfsop12", L"DVDError(%d)"), ret), 0.f);
+		else if( ret > 0)
+			m._setThrdMsg(wfmt(m._fmt("wbfsop13", L"Game installed, but disc contains errors (%d)"), ret), 0.f);
 		else
 			m._setThrdMsg(m._t("wbfsop9", L"An error has occurred"), 1.f);
 		LWP_MutexUnlock(m.m_mutex);
@@ -243,6 +256,13 @@ bool CMenu::_wbfsOp(CMenu::WBFS_OP op)
 						else if(Disc_IsGC() == 0)
 						{
 							Disc_ReadGCHeader(&gcheader);
+							
+							if (_searchGamesByID((const char *) gcheader.id).size() != 0)
+							{
+								error(_t("wbfsoperr4", L"Game already installed"));
+								out = true;
+								break;
+							}
 							cfPos = string((char *) gcheader.id);
 							m_btnMgr.setText(m_wbfsLblDialog, wfmt(_fmt("wbfsop6", L"Installing [%s] %s..."), string((const char *)gcheader.id, sizeof gcheader.id).c_str(), string((const char *)gcheader.title, sizeof gcheader.title).c_str()));
 							done = true;