Copying directories via terminal whilst in the install DVD?

Hi

I am not exactly sure what how this happened but I was in OS X yesterday, and when I shut it down as to do a restart, it wouldn't boot up. I went into verbose mode and it got stuck at "still waiting for root device".

I went into Linux that I have installed on my external HDD, and I looked around, and it seems like that my system/library/extensions folder is completely empty.

All the kexts are missing.

I searched online, and came across this tutorial

http://www.iclarified.com/entry/comments.php?enid=1119

Which is saying I'm able to just copy the whole extensions folder from on the install DVD to the installation so I get the kexts back.

So I am trying to do what the tutorial shows, go into the terminal into the install DVD and type this:

cp -pr /Volumes/Mac OS X Install DVD/System/Library/Extensions/*ATA* /Volumes/Macintosh HD/System/Library/Extensions/.

(Replacing the names with the correct names of the DVD and HDD, but I then have this appear:

usage: cp [-R [-H |-L | -P]] [-apvX] source_file target_file

cp [-R [-H |-L | -P]] [-apvX] source_file ... target_directory

Which is showing that it obviously weren't successful.

What am I doing wrong? I have tried without the dot at the end and without the *ATA* but still no luck.

Any help will be appreciated :)

I know that tutorial is for an install of OS X on a PC, but I've used that article because copying the kexts from the DVD to the installation is what I need to do.

Thanks