sl@0: /*
sl@0: * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: *
sl@0: */
sl@0: //
sl@0: // MbrUtil.cpp
sl@0: //
sl@0: 
sl@0: 
sl@0: #define _WIN32_WINNT 0x0400
sl@0: #include <windows.h>
sl@0: 
sl@0: #pragma warning (disable:4201) // warning C4201: nonstandard extension used : nameless struct/union
sl@0: #include <winioctl.h>
sl@0: 
sl@0: #include <stdio.h>
sl@0: 
sl@0: 
sl@0: const int KSectorSize = 512;
sl@0: BYTE TheBuffer[KSectorSize];
sl@0: 
sl@0: template <class T>
sl@0: T Min(T aLeft,T aRight)
sl@0: 	{return(aLeft<aRight ? aLeft : aRight);}
sl@0: 
sl@0: 
sl@0: 
sl@0: const unsigned char KPartitionTypeEmpty=0x00;
sl@0: const unsigned char KPartitionTypeFAT12=0x01;
sl@0: const unsigned char KPartitionTypeFAT16small=0x04;
sl@0: const unsigned char KPartitionTypeFAT16=0x06;
sl@0: const unsigned char KPartitionTypeNTFS=0x07;
sl@0: const unsigned char KPartitionTypeWin95FAT32=0x0b;
sl@0: const unsigned char KPartitionTypeWin95FAT32LBA=0x0c;
sl@0: const unsigned char KPartitionTypeWin95FAT16LBA=0x0e;
sl@0: const unsigned char KPartitionTypeWin95ExtdLBA=0x0f;
sl@0: const unsigned char KPartitionTypeHiddenFAT12=0x11;
sl@0: const unsigned char KPartitionTypeHiddenFAT16small=0x14;
sl@0: const unsigned char KPartitionTypeHiddenFAT16=0x16;
sl@0: const unsigned char KPartitionTypeHiddenNTFS=0x17;
sl@0: const unsigned char KPartitionTypeHiddenWin95FAT32=0x1b;
sl@0: const unsigned char KPartitionTypeHiddenWin95FAT32LBA=0x1c;
sl@0: const unsigned char KPartitionTypeHiddenWin95FAT16LBA=0x1e;
sl@0: 
sl@0: const unsigned char KBootIndicatorBootable=0x80;
sl@0: 
sl@0: const int KDiskSectorSize = 512;
sl@0: const int KDiskSectorSizeLog2 = 9;
sl@0: 
sl@0: const int KMegaByte = 0x100000;
sl@0: const int KMegaByteLog2 = 20;
sl@0: const int KMegaByteToSectorSizeShift = KMegaByteLog2 - KDiskSectorSizeLog2;
sl@0: const int KMegaByteInSectors = KMegaByte >> KMegaByteToSectorSizeShift;
sl@0: 
sl@0: const int KMaxPartitionEntries=0x4;
sl@0: const int KMBRFirstPartitionOffset=0x1BE;
sl@0: const int KMBRSignatureOffset=0x1FE;
sl@0: 
sl@0: inline BOOL PartitionIsFAT(unsigned char a)
sl@0: 	{
sl@0: 	return (
sl@0: 		a==KPartitionTypeFAT12						||
sl@0: 		a==KPartitionTypeFAT16small					||
sl@0: 		a==KPartitionTypeFAT16						||
sl@0: 		a==KPartitionTypeFAT16						||
sl@0: 		a==KPartitionTypeWin95FAT16LBA				||
sl@0: 		a==KPartitionTypeHiddenFAT12				||
sl@0: 		a==KPartitionTypeHiddenFAT16small			||
sl@0: 		a==KPartitionTypeHiddenFAT16				||
sl@0: 		a==KPartitionTypeHiddenWin95FAT16LBA
sl@0: 		);
sl@0: 	}
sl@0: 
sl@0: inline BOOL PartitionIsFAT32(unsigned char a)
sl@0: 	{
sl@0: 	return (
sl@0: 		a==KPartitionTypeWin95FAT32					||
sl@0: 		a==KPartitionTypeWin95FAT32LBA				||
sl@0: 		a==KPartitionTypeHiddenWin95FAT32			||
sl@0: 		a==KPartitionTypeHiddenWin95FAT32LBA
sl@0: 		);
sl@0: 	}
sl@0: 
sl@0: inline BOOL PartitionIsNTFS(unsigned char a)
sl@0: 	{
sl@0: 	return (
sl@0: 		a==KPartitionTypeNTFS						||
sl@0: 		a==KPartitionTypeHiddenNTFS
sl@0: 		);
sl@0: 	}
sl@0: 
sl@0: class TMBRPartitionEntry
sl@0: 	{
sl@0: public:
sl@0: 	BOOL IsValidPartition()
sl@0: 		{ return (iNumSectors>0 && iPartitionType!=KPartitionTypeEmpty); }
sl@0: 	BOOL IsValidDosPartition()
sl@0: 		{ return (iNumSectors>0 && PartitionIsFAT(iPartitionType)); }
sl@0: 	BOOL IsDefaultBootPartition()
sl@0: 		{ return(iX86BootIndicator==KBootIndicatorBootable && (IsValidDosPartition() || IsValidFAT32Partition())); }
sl@0: 	BOOL IsValidFAT32Partition()
sl@0: 		{ return (iNumSectors>0 && PartitionIsFAT32(iPartitionType)); }
sl@0: public:
sl@0: 	unsigned char iX86BootIndicator;
sl@0: 	unsigned char iStartHead;
sl@0: 	unsigned char iStartSector;
sl@0: 	unsigned char iStartCylinder;
sl@0: 	unsigned char iPartitionType;
sl@0: 	unsigned char iEndHead;
sl@0: 	unsigned char iEndSector;
sl@0: 	unsigned char iEndCylinder;
sl@0: 	DWORD iFirstSector;
sl@0: 	DWORD iNumSectors;
sl@0: 	};
sl@0: 
sl@0: 
sl@0: char* GetPartitionType(unsigned char aType)
sl@0: 	{
sl@0: 	switch (aType)
sl@0: 		{
sl@0: 		case KPartitionTypeFAT12: return "FAT12";
sl@0: 		case KPartitionTypeFAT16: return "FAT16";
sl@0: 		case KPartitionTypeFAT16small: return "FAT16";
sl@0: 		case KPartitionTypeWin95FAT32: return "FAT32";
sl@0: 		default:
sl@0: 			return "????";
sl@0: 
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void ReadMbr(unsigned char* aMbrBuf, int aDiskSizeInSectors, BOOL aHexDump)
sl@0: 	{
sl@0: //	printf("Reading MBR...\n");
sl@0: 	if (aHexDump)
sl@0: 		{
sl@0: 		int n;
sl@0: 		for (n=0; n<KDiskSectorSize; n+=16)
sl@0: 			{
sl@0: 			printf("%08X : %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n",
sl@0: 				n,
sl@0: 				aMbrBuf[n+0x00],aMbrBuf[n+0x01],aMbrBuf[n+0x02],aMbrBuf[n+0x03],aMbrBuf[n+0x04],aMbrBuf[n+0x05],aMbrBuf[n+0x06],aMbrBuf[n+0x07],
sl@0: 				aMbrBuf[n+0x08],aMbrBuf[n+0x09],aMbrBuf[n+0x0A],aMbrBuf[n+0x0B],aMbrBuf[n+0x0C],aMbrBuf[n+0x0D],aMbrBuf[n+0x0E],aMbrBuf[n+0x0F]);
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 
sl@0: 	if ((aMbrBuf[KMBRSignatureOffset+0] != 0x55) ||
sl@0: 		(aMbrBuf[KMBRSignatureOffset+1] != 0xAA))
sl@0: 		{
sl@0: 		printf("No valid MBR\n");
sl@0: 		return;
sl@0: 		}
sl@0: 
sl@0: 	int i;
sl@0: 	TMBRPartitionEntry *pe;
sl@0: 	for (i=0, pe = (TMBRPartitionEntry*)(&aMbrBuf[KMBRFirstPartitionOffset]); i < KMaxPartitionEntries && pe->iPartitionType != 0; i++, pe++)
sl@0: 		{
sl@0: 		if (pe->iFirstSector + pe->iNumSectors > (DWORD) aDiskSizeInSectors)
sl@0: 			{
sl@0: 			printf("No valid MBR\n");
sl@0: 			return;
sl@0: 			}
sl@0: 		}
sl@0: 		
sl@0: 	printf("Partitions: \n");
sl@0: 	printf("  #  Name  Type Fat BtI Hed Sct Cyl Hed Sct Cyl  FirstSect NumSectors\n");
sl@0: 	
sl@0: 	for (i=0, pe = (TMBRPartitionEntry*)(&aMbrBuf[KMBRFirstPartitionOffset]); i < KMaxPartitionEntries && pe->iPartitionType != 0; i++, pe++)
sl@0: 		{
sl@0: 		char* partitionName = GetPartitionType(pe->iPartitionType);
sl@0: 		printf("%3d: %-6s %3u %3u %3u %3u %3u %3u %3u %3u %3u %10u %10u (%u MB)\n", 
sl@0: 			i,
sl@0: 			partitionName,
sl@0: 			pe->iPartitionType,
sl@0: 			pe->IsValidDosPartition() || pe->IsValidFAT32Partition() ? 1 : 0,
sl@0: 			pe->iX86BootIndicator,
sl@0: 			pe->iStartHead,
sl@0: 			pe->iStartSector,
sl@0: 			pe->iStartCylinder,
sl@0: 			pe->iEndHead,
sl@0: 			pe->iEndSector,
sl@0: 			pe->iEndCylinder,
sl@0: 			pe->iFirstSector,
sl@0: 			pe->iNumSectors,
sl@0: 			pe->iNumSectors >> KMegaByteToSectorSizeShift);
sl@0: 
sl@0: 		if (pe->iPartitionType == KPartitionTypeHiddenNTFS)
sl@0: 			{
sl@0: 			printf("Drive contains an NTFS partition, aborting for safety\n");
sl@0: 			return;
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: BOOL WriteMbr(unsigned char* aMbrBuf, int aFatSectorCount)
sl@0: 	{
sl@0: 	TMBRPartitionEntry *pe=(TMBRPartitionEntry*)(&aMbrBuf[KMBRFirstPartitionOffset]);
sl@0: 
sl@0: 	// first partition starts at one MB
sl@0: 	int sectorStart = KMegaByteInSectors;
sl@0: 
sl@0: 	// Create FAT partition
sl@0: 	pe->iFirstSector = sectorStart;
sl@0: 
sl@0: 
sl@0: 	pe->iNumSectors  = aFatSectorCount;
sl@0: 	pe->iX86BootIndicator = 0x00;
sl@0: 	if (pe->iNumSectors < 32680)
sl@0: 		pe->iPartitionType = KPartitionTypeFAT12;
sl@0: 	else if(pe->iNumSectors < 65536)
sl@0: 		pe->iPartitionType = KPartitionTypeFAT16small;
sl@0: 	else if (pe->iNumSectors < 1048576)
sl@0: 		pe->iPartitionType = KPartitionTypeFAT16;
sl@0: 	else
sl@0: 		pe->iPartitionType = KPartitionTypeWin95FAT32;
sl@0: 	sectorStart+= pe->iNumSectors;
sl@0: 
sl@0: 	aMbrBuf[KMBRSignatureOffset+0] = 0x55;
sl@0: 	aMbrBuf[KMBRSignatureOffset+1] = 0xAA;
sl@0: 
sl@0: 	return true;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: int main(int argc,char *argv[])
sl@0: 	{
sl@0: 
sl@0: 	if (argc < 2)
sl@0: 		{
sl@0: 		printf("MbrUtil - Decodes and optionally writes or erases the Master Boot Record on a removable drive\n");
sl@0: 		printf("Syntax : MbrUtil <drive letter> [-e] [-w <FatSizeInMegabytes>] [FAT] [FAT32]\n");
sl@0: 		printf("Where  :\n");
sl@0: 		printf("-e     : erase Master Boot Record:\n");
sl@0: 		printf("-w     : create FAT partition of size <FatSizeInMegabytes>:\n");
sl@0: 		printf("E.g.   : MbrUtil f:\n");
sl@0: 		printf("       : MbrUtil f: -w 16 FAT\n");
sl@0: 		exit(0);
sl@0: 		}
sl@0: 
sl@0: 	bool writeMbr = false;
sl@0: 	bool eraseMbr = false;
sl@0: 	int fatSectorCount = 0;
sl@0: 	char* fatType = "FAT";
sl@0: 
sl@0: 	char driveLetter = (char) toupper(argv[1][0]);
sl@0: 	if ((strlen(argv[1]) > 2) ||
sl@0: 		(strlen(argv[1]) == 2 && argv[1][1] != ':') ||
sl@0: 		(driveLetter < 'A' || driveLetter > 'Z'))
sl@0: 		{
sl@0: 		printf("invalid drive letter");
sl@0: 		exit(4);
sl@0: 		}
sl@0: 
sl@0: 	for (int i=2; i<argc; i++)
sl@0: 		{
sl@0: 		if (strcmpi(argv[i], "-e") == 0)
sl@0: 			{
sl@0: 			eraseMbr = true;
sl@0: 			}
sl@0: 		else if (strcmpi(argv[i], "-w") == 0)
sl@0: 			{
sl@0: 			writeMbr = true;
sl@0: 			i++;
sl@0: 			if (i >= argc)
sl@0: 				{
sl@0: 				printf("no drive size specified");
sl@0: 				exit(4);
sl@0: 				}
sl@0: 			int fatSizeInMegabytes = atoi(argv[i]);
sl@0: 			fatSectorCount = fatSizeInMegabytes << KMegaByteToSectorSizeShift;
sl@0: //			printf("fatSizeInMegabytes %d, fatSectorCount %d\n", fatSizeInMegabytes, fatSectorCount);
sl@0: 			}
sl@0: 		else if (strcmpi(argv[i], "FAT") == 0)
sl@0: 			{
sl@0: 			}
sl@0: 		else if (strcmpi(argv[i], "FAT32") == 0)
sl@0: 			{
sl@0: 			fatType = argv[i];
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			printf("invalid option");
sl@0: 			exit(4);
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 	char diskName[10] = "\\\\.\\?:";
sl@0: 	diskName[4] = driveLetter;
sl@0: 	char physDiskName[20] = "\\\\.\\PHYSICALDRIVE?";
sl@0: 
sl@0: 
sl@0: 
sl@0: 	DISK_GEOMETRY geometry;
sl@0: 	DWORD dummy;
sl@0: 	HANDLE logDeviceHandle;
sl@0: 	HANDLE physDeviceHandle;
sl@0: 	BOOL b;
sl@0: 	DWORD bytesRead;    
sl@0: 	DWORD bytesWritten;
sl@0: 	DWORD dwRet;
sl@0: 
sl@0: 	//*****************************************************************************************
sl@0: 	// open logical drive...
sl@0: 	//*****************************************************************************************
sl@0: 	printf("Opening %s...\n", diskName);
sl@0: 	logDeviceHandle = CreateFileA(
sl@0: 		diskName, 
sl@0: 		GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE , 
sl@0: 		NULL, OPEN_EXISTING, FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH, NULL); 
sl@0: 	if (logDeviceHandle == INVALID_HANDLE_VALUE) 
sl@0: 		{
sl@0: 		printf("CreateFileA() returned INVALID_HANDLE_VALUE\n");
sl@0: 		exit(4);
sl@0: 		}
sl@0: 
sl@0: 	// query geometry
sl@0: 	b = DeviceIoControl(
sl@0: 			logDeviceHandle, 
sl@0: 			IOCTL_DISK_GET_DRIVE_GEOMETRY, 
sl@0: 			NULL, 
sl@0: 			0, 
sl@0: 			&geometry, 
sl@0: 			sizeof(geometry), 
sl@0: 			&dummy, 
sl@0: 			(LPOVERLAPPED)NULL);
sl@0: 	if (!b)
sl@0: 		{
sl@0: 		printf("IOCTL_DISK_GET_DRIVE_GEOMETRY failed error %x", GetLastError());
sl@0: 		CloseHandle(logDeviceHandle);
sl@0: 		exit(4);
sl@0: 		}
sl@0: 	
sl@0: 	LONGLONG diskSizeInBytes = geometry.Cylinders.QuadPart * geometry.TracksPerCylinder * geometry.SectorsPerTrack * KDiskSectorSize;
sl@0: 	int diskSizeInMegaBytes = (int) (diskSizeInBytes / KMegaByte);
sl@0: 	int diskSizeInSectors = (int) (diskSizeInBytes / KDiskSectorSize);
sl@0: 
sl@0: 
sl@0: 	printf("Drive %c MediaType: %d (%s). Size: %ld MBytes, %lu sectors\n", 
sl@0: 		driveLetter, 
sl@0: 		geometry.MediaType,
sl@0: 		geometry.MediaType==RemovableMedia ? "RemovableMedia" :
sl@0: 			geometry.MediaType==FixedMedia ? "FixedMedia" : "?",
sl@0: 		diskSizeInMegaBytes,
sl@0: 		diskSizeInSectors
sl@0: 		);
sl@0: //	printf("Size: %llu sectors\n", diskSizeInSectors);
sl@0: 
sl@0: 	if (geometry.MediaType != RemovableMedia)
sl@0: 		{
sl@0: 		printf("Drive is not removable, exiting");
sl@0: 		CloseHandle(logDeviceHandle);
sl@0: 		exit(4);
sl@0: 		}
sl@0: 
sl@0: 	if (fatSectorCount + KMegaByteInSectors > diskSizeInSectors)
sl@0: 		{
sl@0: 		printf("Specified size is too big");
sl@0: 		CloseHandle(logDeviceHandle);
sl@0: 		exit(4);
sl@0: 		}
sl@0: 
sl@0: 	//*****************************************************************************************
sl@0: 	// Get physical device number
sl@0: 	//*****************************************************************************************
sl@0: 	STORAGE_DEVICE_NUMBER storageDeviceNumber;
sl@0: 	b = IOCTL_STORAGE_GET_DEVICE_NUMBER;
sl@0: 	b = DeviceIoControl(
sl@0: 		  logDeviceHandle,
sl@0: 		  IOCTL_STORAGE_GET_DEVICE_NUMBER, NULL, 0, &storageDeviceNumber, sizeof(storageDeviceNumber), &bytesRead, 0);
sl@0: //	printf("IOCTL_STORAGE_GET_DEVICE_NUMBER b %d DeviceNumber %d\n", b, storageDeviceNumber.DeviceNumber);
sl@0: 	if (!b)
sl@0: 		{
sl@0: 		printf("IOCTL_STORAGE_GET_DEVICE_NUMBER failed error %x", GetLastError());
sl@0: 		CloseHandle(logDeviceHandle);
sl@0: 		exit(4);
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 
sl@0: 	//*****************************************************************************************
sl@0: 	// open physical drive...
sl@0: 	//*****************************************************************************************
sl@0: 	physDiskName[strlen(physDiskName)-1] = (char) ('0' + storageDeviceNumber.DeviceNumber);
sl@0: 
sl@0: 	printf("Opening %s...\n", physDiskName);
sl@0: 	physDeviceHandle = CreateFileA(
sl@0: 		physDiskName, 
sl@0: 		GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE , 
sl@0: 		NULL, OPEN_EXISTING, FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH, NULL); 
sl@0: 	if (physDeviceHandle == INVALID_HANDLE_VALUE) 
sl@0: 		{
sl@0: 		printf("CreateFileA() returned INVALID_HANDLE_VALUE\n");
sl@0: 		exit(4);
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: 	//*******************************************************
sl@0: 	// Read first sector
sl@0: 	//*******************************************************
sl@0: 	dwRet = SetFilePointer(
sl@0: 		physDeviceHandle, 0, 0, FILE_BEGIN);
sl@0: 	if (dwRet != 0)
sl@0: 		{
sl@0: 		printf("Unable to set file pointer, exiting");
sl@0: 		CloseHandle(physDeviceHandle);
sl@0: 		CloseHandle(logDeviceHandle);
sl@0: 		exit(4);
sl@0: 		}
sl@0: 	if (!ReadFile (physDeviceHandle, TheBuffer, KSectorSize, &bytesRead, NULL) )
sl@0: 		{
sl@0: 		printf("ReadFile failed with %d", GetLastError());
sl@0: 		CloseHandle(physDeviceHandle);
sl@0: 		CloseHandle(logDeviceHandle);
sl@0: 		exit(4);
sl@0: 		}
sl@0: 	if(bytesRead != KSectorSize)
sl@0: 		{
sl@0: 		printf("ReadFile length too small: %d", bytesRead);
sl@0: 		CloseHandle(physDeviceHandle);
sl@0: 		CloseHandle(logDeviceHandle);
sl@0: 		exit(4);
sl@0: 		}
sl@0: 
sl@0: 	//*******************************************************
sl@0: 	// Interpret MBR
sl@0: 	//*******************************************************
sl@0: 	ReadMbr(TheBuffer, diskSizeInSectors, false);
sl@0: 	
sl@0: 	//*******************************************************
sl@0: 	// Write new MBR
sl@0: 	//*******************************************************
sl@0: 	if (writeMbr)
sl@0: 		{
sl@0: 		printf("Writing MBR...\n");
sl@0: 		memset(TheBuffer, 0, sizeof(TheBuffer));
sl@0: 		b = WriteMbr(TheBuffer, fatSectorCount);
sl@0: 		if (!b)
sl@0: 			writeMbr = eraseMbr = false;
sl@0: 		}
sl@0: 	if (eraseMbr)
sl@0: 		{
sl@0: 		printf("Erasing MBR...\n");
sl@0: 		memset(TheBuffer, 0, sizeof(TheBuffer));
sl@0: 		}
sl@0: 	if (writeMbr || eraseMbr)
sl@0: 		{
sl@0: 		// Write first sector
sl@0: 		dwRet = SetFilePointer(
sl@0: 			physDeviceHandle, 0, 0, FILE_BEGIN);
sl@0: 		if (dwRet != 0)
sl@0: 			{
sl@0: 			printf("Unable to set file pointer, exiting");
sl@0: 			CloseHandle(physDeviceHandle);
sl@0: 			CloseHandle(logDeviceHandle);
sl@0: 			exit(4);
sl@0: 			}
sl@0: 		if (!WriteFile (physDeviceHandle, TheBuffer, KSectorSize, &bytesWritten, NULL) )
sl@0: 			{
sl@0: 			printf("WriteFile failed with %d", GetLastError());
sl@0: 			CloseHandle(physDeviceHandle);
sl@0: 			CloseHandle(logDeviceHandle);
sl@0: 			exit(4);
sl@0: 			}
sl@0: 		if(bytesWritten != KSectorSize)
sl@0: 			{
sl@0: 			printf("WriteFile length too small: %d", bytesWritten);
sl@0: 			CloseHandle(physDeviceHandle);
sl@0: 			CloseHandle(logDeviceHandle);
sl@0: 			exit(4);
sl@0: 			}
sl@0: 		if (writeMbr)
sl@0: 			ReadMbr(TheBuffer, diskSizeInSectors, false);
sl@0: 		}
sl@0: 
sl@0: 	
sl@0: 	CloseHandle(physDeviceHandle);
sl@0: 
sl@0: 
sl@0: 	if (writeMbr || eraseMbr)
sl@0: 		{
sl@0: 		printf("Dismounting %s...\n", diskName);
sl@0: 		b = DeviceIoControl(
sl@0: 		  logDeviceHandle,
sl@0: 		  FSCTL_DISMOUNT_VOLUME, NULL, 0, NULL, 0, &bytesRead, 0);
sl@0: 		if (!b)
sl@0: 			printf("FSCTL_DISMOUNT_VOLUME b %d err %d\n", b, GetLastError());
sl@0: 		}
sl@0: 
sl@0: 	CloseHandle(logDeviceHandle);
sl@0: 	
sl@0: 	//*******************************************************
sl@0: 	// Format the disk
sl@0: 	//*******************************************************
sl@0: 	if (writeMbr || eraseMbr)
sl@0: 		{
sl@0: 		printf("\n");
sl@0: 		char prompt[80];
sl@0: 		sprintf(prompt, "Eject card from drive %C: and press ENTER when ready...\n", driveLetter);
sl@0: 		printf(prompt);
sl@0: 		getchar();
sl@0: 
sl@0: 		char winCmd[1024];
sl@0: 		char cmdArgs[1024];
sl@0: 		STARTUPINFO si = {0,};
sl@0: 		PROCESS_INFORMATION pi;
sl@0: 
sl@0: 		GetWindowsDirectory(winCmd, sizeof(winCmd));
sl@0: 		strncat(winCmd, "\\system32\\cmd.exe", sizeof(winCmd));
sl@0: 		sprintf(cmdArgs, "/C format %c: /FS:%s /Q /X", driveLetter, fatType);
sl@0: 		printf("Executing : %s %s\n", winCmd, cmdArgs);
sl@0: 		b = CreateProcessA(
sl@0: 			winCmd,				//__in_opt     LPCTSTR lpApplicationName,
sl@0: 			cmdArgs,			//__inout_opt  LPTSTR lpCommandLine,
sl@0: 			NULL,				//__in_opt     LPSECURITY_ATTRIBUTES lpProcessAttributes,
sl@0: 			NULL,				//__in_opt     LPSECURITY_ATTRIBUTES lpThreadAttributes,
sl@0: 			FALSE,				//__in         BOOL bInheritHandles,
sl@0: 			0,					//__in         DWORD dwCreationFlags,
sl@0: 			NULL,				//__in_opt     LPVOID lpEnvironment,
sl@0: 			NULL,				//__in_opt     LPCTSTR lpCurrentDirectory,
sl@0: 			&si,				//__in         LPSTARTUPINFO lpStartupInfo,
sl@0: 			&pi);				//__out        LPPROCESS_INFORMATION lpProcessInformation
sl@0: 		if (!b)
sl@0: 			printf("CreateProcess failed with %d", GetLastError());
sl@0: 
sl@0: 		dwRet = WaitForSingleObject(pi.hProcess, INFINITE);
sl@0: 		CloseHandle(pi.hThread);
sl@0: 		CloseHandle(pi.hProcess);
sl@0: 
sl@0: 		}
sl@0: 
sl@0: 	return 0;
sl@0: 	}