ring3读取MBR

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：