I am sending my X-Box 360 to be repaired, but first I have to remove the hard drive. I cannot seem to do it, nor are there any good articles of how to do it. When I take off the top there is another platform there that I cannot seem to get off.

First question: Does every X-Box 360 have a hard drive?

Second question: If so, how the heck do I remove it?

*EDIT: Does the hard drive come separate? Like, do you need it? Or is it just something you buy for extra memory?
If you bought a core system, you lack a HDD. If you bought a premium, you have one and it has a silver stip that says "HDD" Just press that button and lift...that is it.
In response to Stealth 2k
The core system is the white, plain, original one, right?
In response to Cavern
They are both white... The Elite is black. You can tell the difference between the core, and the premium from the drive cover. Premium is silver/chrome, and the core just is flat white like the rest of the console... You cant play many games without a HDD, or memory card...shouldn't be hard to figure out.