can I boot dvdr with a magazine demo disk?

[metalgear fan]

Can I boot dvdrs with a magazine demo disk ,its over 4.7 gig if not what do you suggest, Iheard people talk about devil may cry demo disk, but where can I get that?

I have AR2 and a modhip on it's way although my AR2 is version 2.1 which have to change

Anybody in the uk know where I can get hold of a 2.0.1 0r .0.2 version?

Thanks in advance

Metalgear Fan