How do I "spin-down" hardrive after X minutes to save power?

[Satish Balay]

On Wed, 28 Jul 2004, Matthew Miller wrote:

> On Wed, Jul 28, 2004 at 10:58:57AM -0700, Kevin Wang wrote:
> > there are lots of other apps that read and write to/from the disk.
> > netscape (used to?) do that; write its book mark file every 60
> > seconds.  yuck. killed my laptop battery fast.
> > First thing to do is to make sure the filesystem is mounted with the
> > 'noatime' option. that'll help.
> 
> Also: 
> 
> echo -n 1 > /proc/sys/vm/laptop_mode

APM automatically sets(toggles) laptop_mode - when switched to battery
(atleast on FC1)

Satish