#define Dunsigned short unsigned long /*定义双字数据类型名
*/
/* return 0 if succeeds, return non-0 if fails */
int extInt13DriveParameter(int driveNum,
unsigned long *maxCylinder,
unsigned long *maxHead,
unsigned long *maxSector,
unsigned long *totalSector)
{
/*
unsigned long cylinder=0;
unsigned long head=0;
unsigned long sector=0;
unsigned long totalSectorVar=0; */