(for gurus) a process access HDD

[Mohammad Halawah <mhalawah@gmail.com>]

Hi gurus,

I am using the " hdparm -S 1 /dev/hda" command to keep the HDD quite while I 
am reading some pdf's

but the problem is that there is a process running and ask for data from the 
HDD which reactivate the HDD again and I am losing the "quietness" 

unfortionatly the "top" command did not help

many thanx in advance