No RAID possible on ubuntu desktop install?

[oxy]

> No, it's not right. But in order to set RAID you need alternate iso, which uses Debian's
> text-based installer i think. You can find bittorrent links for alternate ISOs on this page*.

hey Gökhan, i know what u mean. I've used the text based installer already,
but following your link i got an iso which does exactly the same as the
standard one (despite explicitly announced as text based).
(link: http://gb.releases.ubuntu.com/12.04/ubuntu-12.04-desktop-amd64.iso)

Whats wrong there?
Still dont understand why they dont implement raid on standard
desktop install  :-/