> >It is a HIGHLY RECOMMENDED practice to turn it off again during
> >shutdown,
> >by using something like:
> >
> > ## turns off IDE write caching
> > hdparm -W0 /dev/hd[a-d]
>
> What can happen if I don' t turn off the -W flag before halt?
Then you might power-off your drives before they have finished
writing everything to disk.
-ml