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：

复制代码 代码如下: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, "%sn", 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。