Hard disk power management

Nikos Chantziaras realnc at arcor.de
Fri Feb 26 22:51:50 GMT 2010

On 02/26/2010 08:08 PM, Duncan wrote:
> Nikos Chantziaras posted on Fri, 26 Feb 2010 19:39:41 +0200 as excerpted:
>> I'm currently dual booting Linux (Gentoo) and Windows 7.  In Windows,
>> there's an option in the power management settings to spin down hard
>> disks if they're idle for a specified amount of time.  Is there
>> something similar in KDE?  (4.4.0).
> I'm not sure about kde, tho I'd guess it's likely, with the power-devil/
> laptop/hal/polkit etc USE flags/packages.  However, it's definitely
> possible at the command line.
> If you're on a laptop and battery, you almost certainly WANT/NEED laptop-
> mode-tools installed and configured.
> If you're on an always AC line-powered system, you likely don't want or
> need all that, but hdparm does what you want.  Merge and configure it, put
> its initscript in the appropriate runlevels, and it'll setup the hd
> power-downs (among other things) for you at boot.  (While the kernel ide
> subsystem is deprecated in favor of libata based sata/pata management,
> thus /dev/sd* instead of /dev/hd*, don't be fooled by that into thinking
> hdparm no longer works.  It has taken a bit of time both for hdparm itself
> and to get the required command pass-thrus in the kernel, but hdparm works
> quite well for libata based /dev/sd* management now, as well as the
> deprecated ide /dev/hd*.)

Thanks.  I use hdparm -Y to power down HDs by hand.  Everything more 
than that (hdparm options are like a zoo) is too much for me and I'm not 
prepared to deal with it.  I was hoping for a simple and sane "click it 
and forget it" solution.

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