C++采用ring3读取MBR实例

本文实例讲述了C++采用ring3读取MBR的方法，分享给大家供大家参考。具体实现方法如下：

DWORD dwBytesReturned = 0;  

    BYTE bytBuffer_1[512];  

    BYTE bytBuffer_2[512];  

    CHAR string[2048];  

    HANDLE hDevice, hDriver;  

    BOOL bRet;  

  

    hDevice = CreateFile("\\\\.\\PhysicalDrive0", GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);  

  

    if(hDevice == INVALID_HANDLE_VALUE)  

    {  

        printf("\nFailed - CreateFile - Open the PhysicalDrive0.\n");  

        return 0;  

    }  

  

    bRet = ReadFile(hDevice, (LPVOID)bytBuffer_1, 512, &dwBytesReturned, NULL);  

    if(bRet == FALSE)  

    {  

        printf("\nFailed - ReadFile - the first one.\n");  

        return 0;  

    }  

    printf("aaaa");  

    Sleep(1000*3);  

    printf("\nRead MBR using the ReadFile function...\n");  

    printf("- - - - - - - - - - - - - - - - - - - - - - - - - - - -");  

  

    sprintf(string, "\n");  

  

    for(DWORD i = 0; i < 512; i++)  

    {  

        sprintf(string, "%s %02X", string, bytBuffer_1[i]);  

  

        if(((i + 1) % 16) == 0)  

            sprintf(string, "%s\n", string);  

  

        if(((i + 1) % 16) == 8)  

            sprintf(string, "%s -", string);  

    }  

  

    printf("%s", string);  

  

    printf("- - - - - - - - - - - - - - - - - - - - - - - - - - - -");

打印结果如下：

希望本文所述对大家的C++程序设计有所帮助。