E5000 Ultra IDE hard drive install

I just got my E5000 Ultra. quite chuffed with it. I have an old 40 GB hard drive lying around that I want to install into it.
I found these instructions:
http://www.peterandrew.com/music/studio ... drive.html
Anything I should be aware of?
I found these instructions:
http://www.peterandrew.com/music/studio ... drive.html
Anything I should be aware of?