Ok so I installed my new Hitachi 7k500. at first i did a fresh install but some things went wrong so i erased and reinstalled osx then copied my old drive onto this new one. Now my hd temp doesnt show up in istat, how can i fix this? and it seems mdworker is spiking my cpu up to 60% in each core. actually now it dropped but is this normal? also can anyone assist me in installing hdapm? edit: please read further into this thread and maybe you can help me decide if i should stay with the hitachi or switch back to my seagate or possibly another type.