APM_SYS_OFF
if (!apm_cd.cd_ndevs || (apm_minver == 0 && state > APM_SYS_OFF))
apm_set_powstate(APM_DEV_DISK(0xff), APM_SYS_OFF);
rv = apm_set_powstate(APM_DEV_DISK(0xff), APM_SYS_OFF);
APM_SYS_OFF);