Well I've noticed a difference! This solves the issue I've been having where, even when I'm completely idle, the hard drive spins up, then spins down (with a little click; not the same issue as the beep thing) and then up and down again... non-stop. To fix this, I've been having to type into the terminal the following line every time I boot my late 2008 Macbook Pro:
Code:/usr/local/bin/hdapm disk0 max
But now, this issue is finally resolved with this update!
This update just puts it into your .bash_profile