On Sun, 27 Feb 2011, Kenneth Porter wrote: > To: CentOS mailing list <centos at centos.org> > From: Kenneth Porter <shiva at sewingwitch.com> > Subject: [CentOS] Standard location for hotplug-time hdparm invocation > > I need to disable the spin-down on an external USB drive > because it spins down spontaneously while in use. The > drive forgets the spindown-disable state across power > outage so I need to reissue the hdparm command with each > boot or hotplug. Where should I put the hdparm command to > do this? Not sure about hotpluging, but for the reboot /etc/rc.d/rc.local might be a good place to try this: #!/bin/sh # # This script will be executed *after* all the other init # scripts. You can put your own initialization stuff in here # if you don't want to do the full Sys V style init stuff. touch /var/lock/subsys/local # turn off DMA for hde WD drive # -d0 = off # -d1 = on # hdparm -d0 /dev/hde # set sector count for multiple sector I/O # WD drives like a low setting # to prevent I/O data errors. # hdparm -m2 /dev/hde Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------