OS X equivalent of linux cmd "hdparm -X34 /dev/hda"

From: markoviaan (markovDITWEG_at_tele2.be)
Date: 11/29/04

Date: Mon, 29 Nov 2004 11:11:35 +0100

I've been able to run linux on a REV 1 Blue White 400 Mhz
using this cmd, but I think it would run also os x if I only had the
os x variant.
Where should I put it, so that it is a kernel/startup parameter??

I see os x still crashes when the hd is _too_ busy...

I know I could add a ide-ata card...
but this cmd is cheap....