hard disk spin down

pol linux_milano at yahoo.it
Sun Oct 7 14:12:23 UTC 2007

Most of the time spent on my laptop is reading. Often the laptop is not
powered, so that i can hear the inner disk spinning down and restarting
every dozen seconds, because many processes are running, while i am
My question is: is there a way to force processes not to read and write so
Alternatively, is it safe disabling the disk spin down? 

My understanding is that time to spin down is set
in  /etc/default/acpi-support, where SPINDOWN_TIME=12 
and controlled by the kde-guidance-powermanager package. Is that correct?
Why so a short time (12s) is set as the default?

Thank you 

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