diff --git a/INSTALL/Ventoy2Disk.exe b/INSTALL/Ventoy2Disk.exe
index 626efc07..4f66a011 100644
Binary files a/INSTALL/Ventoy2Disk.exe and b/INSTALL/Ventoy2Disk.exe differ
diff --git a/Ventoy2Disk/Ventoy2Disk/DiskService_vds.c b/Ventoy2Disk/Ventoy2Disk/DiskService_vds.c
index 69f09967..49479b6d 100644
--- a/Ventoy2Disk/Ventoy2Disk/DiskService_vds.c
+++ b/Ventoy2Disk/Ventoy2Disk/DiskService_vds.c
@@ -887,7 +887,7 @@ STATIC BOOL VDS_CallBack_CleanDisk(void *pInterface, VDS_DISK_PROP *pDiskProp, U
 BOOL VDS_CleanDisk(int DriveIndex)
 {
 	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK, DriveIndex, VDS_CallBack_CleanDisk, 0);
-    Log("VDS_CleanDisk %d ret:%d", DriveIndex, ret);
+    Log("VDS_CleanDisk %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
     return ret;
 }
 
@@ -958,15 +958,15 @@ STATIC BOOL VDS_CallBack_DeletePartition(void *pInterface, VDS_DISK_PROP *pDiskP
 
 BOOL VDS_DeleteAllPartitions(int DriveIndex)
 {
-	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK, DriveIndex, VDS_CallBack_DeletePartition, 0);
-    Log("VDS_DeleteAllPartitions %d ret:%d", DriveIndex, ret);
+	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK, DriveIndex, VDS_CallBack_DeletePartition, 0);    
+	Log("VDS_DeleteAllPartitions %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
     return ret;
 }
 
 BOOL VDS_DeleteVtoyEFIPartition(int DriveIndex)
 {
 	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK, DriveIndex, VDS_CallBack_DeletePartition, 2);
-    Log("VDS_DeleteVtoyEFIPartition %d ret:%d", DriveIndex, ret);
+	Log("VDS_DeleteVtoyEFIPartition %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
     return ret;
 }
 
@@ -1029,8 +1029,8 @@ STATIC BOOL VDS_CallBack_ChangeEFIAttr(void *pInterface, VDS_DISK_PROP *pDiskPro
 
 BOOL VDS_ChangeVtoyEFIAttr(int DriveIndex, UINT64 Attr)
 {
-	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK, DriveIndex, VDS_CallBack_ChangeEFIAttr, Attr);
-    Log("VDS_ChangeVtoyEFIAttr %d ret:%d", DriveIndex, ret);
+	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK, DriveIndex, VDS_CallBack_ChangeEFIAttr, Attr);    
+	Log("VDS_ChangeVtoyEFIAttr %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
     return ret;
 }
 
@@ -1070,7 +1070,7 @@ BOOL VDS_ChangeVtoyEFI2ESP(int DriveIndex, UINT64 Offset)
 	Para.Offset = Offset;
 
 	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK2, DriveIndex, VDS_CallBack_ChangeEFIType, (ULONG)&Para);
-	Log("VDS_ChangeVtoyEFI2ESP %d ret:%d", DriveIndex, ret);
+	Log("VDS_ChangeVtoyEFI2ESP %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
 	return ret;
 }
 
@@ -1083,7 +1083,7 @@ BOOL VDS_ChangeVtoyEFI2Basic(int DriveIndex, UINT64 Offset)
 	Para.Offset = Offset;
 
 	BOOL ret = VDS_DiskCommProc(INTF_ADVANCEDDISK2, DriveIndex, VDS_CallBack_ChangeEFIType, (ULONG)&Para);
-	Log("VDS_ChangeVtoyEFI2ESP %d ret:%d", DriveIndex, ret);
+	Log("VDS_ChangeVtoyEFI2Basic %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
 	return ret;
 }
 
@@ -1157,8 +1157,8 @@ BOOL VDS_CreateVtoyEFIPart(int DriveIndex, UINT64 Offset)
 	memcpy(&(Para.Type), &EspPartType, sizeof(GUID));
     CoCreateGuid(&(Para.Id));
 
-	BOOL ret = VDS_DiskCommProc(INTF_CREATEPARTITIONEX, DriveIndex, VDS_CallBack_CreateVtoyEFI, (ULONG)&Para);
-    Log("VDS_CreateVtoyEFIPart %d ret:%d", DriveIndex, ret);
+	BOOL ret = VDS_DiskCommProc(INTF_CREATEPARTITIONEX, DriveIndex, VDS_CallBack_CreateVtoyEFI, (ULONG)&Para);    
+	Log("VDS_CreateVtoyEFIPart %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
     return ret; 
 }
 
@@ -1217,7 +1217,8 @@ BOOL VDS_FormatVtoyEFIPart(int DriveIndex, UINT64 Offset)
 	Para.Offset = Offset;
 	memcpy(Para.Name, L"VTOYEFI", 7 * 2);
 
-	BOOL ret = VDS_DiskCommProc(INTF_PARTITIONMF, DriveIndex, VDS_CallBack_FormatVtoyEFI, (ULONG)&Para);
-	Log("VDS_FormatVtoyEFIPart %d ret:%d", DriveIndex, ret);
+	BOOL ret = VDS_DiskCommProc(INTF_PARTITIONMF, DriveIndex, VDS_CallBack_FormatVtoyEFI, (ULONG)&Para);	
+	Log("VDS_FormatVtoyEFIPart %d ret:%d (%s)", DriveIndex, ret, ret ? "SUCCESS" : "FAIL");
 	return ret;
-}
\ No newline at end of file
+}
+
diff --git a/Ventoy2Disk/Ventoy2Disk/PhyDrive.c b/Ventoy2Disk/Ventoy2Disk/PhyDrive.c
index d36f51dd..343866d5 100644
--- a/Ventoy2Disk/Ventoy2Disk/PhyDrive.c
+++ b/Ventoy2Disk/Ventoy2Disk/PhyDrive.c
@@ -1837,9 +1837,11 @@ static BOOL BackupDataBeforeCleanDisk(int PhyDrive, UINT64 DiskSize, BYTE **pBac
 	BOOL Return = FALSE;
 	BOOL ret = FALSE;
 	BYTE *backup = NULL;
+	UINT64 offset;
 	HANDLE hDrive = INVALID_HANDLE_VALUE;
 	LARGE_INTEGER liCurPosition;
 	LARGE_INTEGER liNewPosition;
+	VTOY_GPT_INFO *pGPT = NULL;
 
 	Log("BackupDataBeforeCleanDisk %d", PhyDrive);
 
@@ -1870,6 +1872,18 @@ static BOOL BackupDataBeforeCleanDisk(int PhyDrive, UINT64 DiskSize, BYTE **pBac
 		goto out;
 	}
 	
+	pGPT = (VTOY_GPT_INFO *)backup;
+	offset = pGPT->Head.EfiBackupLBA * 512;
+	if (offset >= (DiskSize - SIZE_2MB) && offset < DiskSize)
+	{
+		Log("EFI partition table check success"); 
+	}
+	else
+	{
+		Log("Backup EFI LBA not in last 2MB range: %llu", pGPT->Head.EfiBackupLBA);
+		goto out;
+	}
+
 	//read last 2MB
 	liCurPosition.QuadPart = DiskSize - SIZE_2MB;
 	liNewPosition.QuadPart = 0;
@@ -2111,6 +2125,13 @@ int UpdateVentoy2PhyDrive(PHY_DRIVE_INFO *pPhyDrive, int TryId)
 		{
 			bWriteBack = FALSE;
 		}
+
+		//write the first 2MB except parttable
+		if (!WriteBackupDataToDisk(hDrive, 34 * 512, pBackup + 34 * 512, SIZE_2MB - 34 * 512))
+		{
+			bWriteBack = FALSE;
+		}
+
 		Status = ERROR_NOT_FOUND;
 	}
 	else if (Esp2Basic)
@@ -2288,12 +2309,7 @@ int UpdateVentoy2PhyDrive(PHY_DRIVE_INFO *pPhyDrive, int TryId)
 
 	if (CleanDisk)
 	{
-		if (!WriteBackupDataToDisk(hDrive, 4 * 512, pBackup + 4 * 512, SIZE_2MB - 4 * 512))
-		{
-			bWriteBack = FALSE;
-		}
-
-		if (!WriteBackupDataToDisk(hDrive, 0, pBackup, 4 * 512))
+		if (!WriteBackupDataToDisk(hDrive, 0, pBackup, 34 * 512))
 		{
 			bWriteBack = FALSE;
 		}
@@ -2302,9 +2318,15 @@ int UpdateVentoy2PhyDrive(PHY_DRIVE_INFO *pPhyDrive, int TryId)
 
 		if (bWriteBack)
 		{
-			Log("Write success, now delete %s", BackBinFile);
+			Log("Write backup data success, now delete %s", BackBinFile);
 			DeleteFileA(BackBinFile);
 		}
+		else
+		{
+			Log("Write backup data failed");
+		}
+
+		Sleep(1000);
 	}
 
     //Refresh Drive Layout