struct partition *sp;

char buf[512];

fd = open(floppyimage, 0, 0_RDONLY);

read(fd, buf, 512);

sp = (struct partition *)&buf[0x1BE];

prinf("sys_type=%x\n", sp->sys_type);

printf("start_sector=%d nr_sectors=%d\n", sp->start_sector, sp->nr_sectors);