C++采用ring3读取MBR实例

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。