问在Windows7上将原始数据写入硬盘驱动器(PhysicalDrive)的最快方法

EN

    short WriteSector
       (LPCWSTR _dsk,    // disk to access
       char *&_buff,         // buffer containing data to be stored
       unsigned int _nsect,   // sector number, starting with 0
       ULONG    Blocks
       )
{
    DWORD bytesWritten;   
    wchar_t errMsg[256];

    //attempt to get a handle to the specified volume or physical drive
    HANDLE hDisk = CreateFile(_dsk, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);

    //make sure we have a handle to the specified volume or physical drive
    if(hDisk==INVALID_HANDLE_VALUE) 
    {  
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);    
        OutputDebugString(errMsg);
        printf("Error attempting to get a handle to the device! (%s)\n", errMsg);
        goto exit;
    }

    // set pointer to the sector on the disk that we want to write to
    SetFilePointer(hDisk, (_nsect * SIZE_OF_BLOCK), 0, FILE_BEGIN); 

    //write the data
    if (!WriteFile(hDisk, _buff, (Blocks * SIZE_OF_BLOCK), &bytesWritten, NULL))
    {
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);  
        printf("WriteFile failed! (%s)\n", errMsg);
        goto exit;
    }

exit:
    CloseHandle(hDisk);

    writeMutex.unlock();

    return 0;
}

    UINT Disk_LockVolume(LPCWSTR _dsk)
{       
    HANDLE hVol;
    LPWSTR errMsg;
    DWORD status;
    bool success = false;

    //now try to get a handle to the specified volume so we can write to it
    hVol = CreateFile(_dsk, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);

    //check to see if we were able to obtain a handle to the volume
    if( hVol == INVALID_HANDLE_VALUE )
    {
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);    

        printf("Disk_LockVolume() - CreateFile failed (%s)\n", errMsg);
        goto exit;
    }

    // now lock volume
    if (!DeviceIoControl(hVol, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0, &status, NULL))
    {
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);    
        printf("Disk_LockVolume() - Error attempting to lock device!  (%s)\n", errMsg);
        goto exit;
    }

    //dismount the device 
    if (!DeviceIoControl(hVol, FSCTL_DISMOUNT_VOLUME, NULL, 0, NULL, 0, &status, NULL))
    {
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);    
        printf("Disk_LockVolume() - Error attempting to dismount volume.  (%s)\n", errMsg);
        goto exit;
    }


exit:
    CloseHandle(hVol);

    return 1;
}

UINT WriteSector(HANDLE hWriteDisk, PBYTE   Buf, ULONG   Lba, ULONG Blocks)
{       
    DWORD bytesWritten;
    LPTSTR errMsg = "";

    //setup overlapped structure to tell WriteFile function where to write the data
    OVERLAPPED overlapped_structure;
    memset(&overlapped_structure, 0, (Blocks * SIZE_OF_BLOCK));
    overlapped_structure.Offset = (Lba * SIZE_OF_BLOCK);
    overlapped_structure.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);


    //write the data
    if (!WriteFile(hWriteDisk, Buf, (Blocks * SIZE_OF_BLOCK), &bytesWritten, &overlapped_structure))
    {
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);    
        printf("WriteSector() - WriteFile failed (%s)\n", errMsg);
    }

    if (bytesWritten != (Blocks * SIZE_OF_BLOCK))
    {
        printf("WriteSector() - Bytes written did not equal the number of bytes to be written\n");
        return 0;
    }
    else
    {
        return Blocks;
    }
}

HANDLE Disk_GetHandle(UINT Lun)
{       
    HANDLE hVol;
    LPTSTR errMsg = "";
    bool success = false;

    //now try to get a handle to the specified volume so we can write to it
    hVol = CreateFile(MassStorageDisk[Lun].PhysicalDisk, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_FLAG_OVERLAPPED|FILE_FLAG_NO_BUFFERING, 0);

    //check to see if we were able to obtain a handle to the volume
    if( hVol == INVALID_HANDLE_VALUE )
    {
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);
        printf("Disk_WriteData() - CreateFile failed (%s)\n", errMsg);
    }

    return hVol;
}

OVERLAPPED osWrite;
memset(&osWrite, 0, (Blocks * SIZE_OF_BLOCK));
osWrite.Offset = (Lba * SIZE_OF_BLOCK);
osWrite.hEvent = 0;


//write the data
if (!WriteFile(hWriteDisk, Buf, (Blocks * SIZE_OF_BLOCK), &bytesWritten, &osWrite))
{
    DWORD Errorcode = GetLastError();
    if (Errorcode == ERROR_IO_PENDING)
    {
        WaitForSingleObject(osWrite.hEvent, INFINITE);
    }
    else
    {
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), errMsg, 255, NULL);    
        printf("WriteSector() - WriteFile failed (%s)\n", errMsg);
        goto exit;
    }
}