Win XP下，IOCTL_ATA_PASS_THROUGH的使用？！！急！！
想编写C++程序，想SATA Disk发送ATA Command，如READ/WRITE SECTORS，Download等。查了些资料，发现IOCTL_ATA_PASS_THROUGH可以发送ATA Command，但是我写了个小Code，总是不能成功呢？求大神解惑！！！
或者，请大神告诉我一个可以在Win Xp下发送ATA Command的方法。PS：我不是要发IDENTIFY DEVICE这个指令，而是发送如READ SECTORS, WRITE SECTORS, DOWNLOAD等指令的方法！！！！万分感谢！！！！

Code如下。直接使用WDK进行编译！

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

// 这一步是成功的，我可以打开Port

ATA_PASS_TRHOUGH_EX inputBuffer；
ULONG inputBufferSize = sizeof(ATA_PASS_THROUGH_EX);

inputBuffer.Length = sizeof(ATA_PASS_THROUGH_EX);
inputBuffer.AtaFlags = ATA_FLAGS_DATA_IN;
inputBuffer.DataTransferLength = 512; // 1 sector
inputBuffer.DaatBufferSize = 0;

inputBuffer.CurrentTaskFile[0] = 0; // feature reg
inputBuffer.CurrentTaskFile[1] = 1; // sector count reg
inputBuffer.CurrentTaskFile[2] = 0x3f; // sector number reg
inputBuffer.CurrentTaskFile[3] = 0; // cyl low reg
inputBuffer.CurrentTaskFile[4] = 0; // cyl high reg
inputBuffer.CurrentTaskFile[5] = 0xe0; // device reg
inputBuffer.CurrentTaskFile[6] = 0x20; // commang reg
inputBuffer.CurrentTaskFile[7] = 0;

UCHAR *outputBuffer;
ULONG outputBufferSize = 512;

ULONG length = outputBuffer + sizeof(ATA_PASS_THROUGH_EX);

BOOL status;
status = DeviceIoControl(hDevice,
IOCTL_ATA_PASS_THROUGH,

&inputBuffer,
inputBufferSize,
outputBuffer,
length,
&returned,
FALSE);

if(!status) {
ULONG errorcode = GetLastError();}

到这里，我每次运行，得到的errorcode都是87,即参数不正确。实在不知道哪个参数有问题？？？求达人解答！！！或者，告诉个其他能在Win XP下，发送ATA Command（WRITE/READ SECTORS）的方法！！！！谢谢