关于读写硬盘的物理扇区的问题－－－高手请进！！

[wangkun007]

hDevice = CreateFile("\\\\.\\C:",GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,NULL, OPEN_EXISTING, 0, NULL);
if (hDevice == NULL)
{
MessageBox (0,"打开驱动器失败!","提示",MB_ICONERROR);
return NULL;
}
SetFilePointer(hDevice,0,NULL,FILE_BEGIN);
if (!ReadFile ( hDevice,buffer,512,&bytesread,NULL) )
{

}

上面是我的主要代码，我想读0柱面0磁头1扇区的512个BYTE，但是我的程序每次都是读0柱面1磁头1扇区的512个BYTE，请问我错在那里了？在这里先谢过了！!!

[solitarywk]

bool ReadHddParams(unsigned short *params, int pn, int dn)
{
int i,IdePort[2] = {0x1f0, 0x170}; //primary & secondary IDE Controller
unsigned char HD_Selection[2]={0xa0,0xb0}; // Master Disk: 1010 0000, Slave Disk: 1011 0000
unsigned short BasePort = IdePort[pn];
for(i=0;i<500;i++) //Get HDC Status, wait until HDC not busy
{
if((inportb(BasePort+7)&0x80)==0)
break; //hdc is ready
Sleep(1);
}
if(i>=300)return false; //HDC no response

outportb(BasePort+6, HD_Selection[dn]); //master or slave hard disk
outportb(BasePort+7, 0x10); //HDD status
for(i=0;i<300;i++) //Get HDD Status, wait until HDD not busy
{
if((inportb(BasePort+7)&0x80)==0)
break;
Sleep(1);
}
if(i>=300)return false; //HDC no response
if(inportb(BasePort+7)!=0x50)return false; //HDD ready: 0101 0000
outportb(BasePort+6, HD_Selection[dn]); //master or slave hard disk
outportb(BasePort+7, 0xec); //HDD parameters
for(i=0;i<300;i++) //wait for parameters retrieved
{
if(inportb(BasePort+7)==0x58) //retrieved OK
break;
Sleep(1);
}
if(i>=300)return false; //parameters retrieved error
for(i=0;i<256;i++)
params[i]=inportw(BasePort);
return true;
}

[qibo999]

看看这个吧，会有帮助的：
http://www.cppfans.com/articles/system/portrw_winio.asp

[jbz]

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