BOOL SetAPM(HANDLE hDrive, WORD APMVal, BOOL Disable)
{
	BOOL rez = false;
	DWORD size1, bytesRet;
	ATA_PASS_THROUGH_EX_WITH_BUFFERS aptex;

	aptex.Length = sizeof ATA_PASS_THROUGH_EX;
	aptex.AtaFlags = ATA_FLAGS_DATA_IN;
	aptex.DataTransferLength = 512;
	aptex.DataBufferOffset = sizeof ATA_PASS_THROUGH_EX;	
	aptex.TimeOutValue = 1;
	aptex.CurrentTaskFile.bCommandReg = WIN_SETFEATURES;
	aptex.CurrentTaskFile.bSectorCountReg = 0;
	size1 = sizeof ATA_PASS_THROUGH_EX;

		if (Disable)
		{
			aptex.CurrentTaskFile.bFeaturesReg = SETFEATURES_DIS_APM;	
		}
		else
		{
			aptex.CurrentTaskFile.bFeaturesReg = SETFEATURES_EN_APM;		
			aptex.CurrentTaskFile.bSectorCountReg = (BYTE)APMVal;
		}

	bytesRet = 0;
	rez = DeviceIoControl(hDrive, IOCTL_ATA_PASS_THROUGH, &aptex, size1, &aptex,
							sizeof ATA_PASS_THROUGH_EX_WITH_BUFFERS, &bytesRet, NULL);
	
	return rez;
}