| Just curious how this program accomplishes its changes | and whether the program has to run at boottime | to have the setting take effect? does it belong | in an rc script? They are not persistant after a reboot. IIRC, there is no startup script for hdparm, however; the hwtools package includes a hdparm section in it's startup script. Otherwise copy the /etc/init.d/skeleton and build your own. HTH, Brooks