Ubuntu on DreamScreen

[H.S.Rai]

I tried to install Ubuntu on HP DreamScreen 400:

http://h41112.www4.hp.com/dreamscreen/in/en/index.html

http://www.youtube.com/watch?v=_5BvYn-wUTM

which has some form of Linux and is touch screen All-in-one Internet
Device with Atom processor. It comes with FreeDos along with Linux
(named as DreamScreen OS). On FreeDoS  OS, one can install MS Windows.
HP says that customers can have MS Windows 7 Home Edition.

When I got this machine, it had DreamScreen and MS Windows 7 ultimate.
I booted with Ubuntu Live, it says it has MS Windows 7, but fail to
recognise Linux (Dream Screen). It has lot many partitions many of
them were encrypted, so could not mount them. On installing Ubuntu
along MS Window. I could boot in either in MS Window 7 or Ubuntu. HP
documentation says, on installing new OS, you may loose dual boot, for
that boot from HP DreamScreen System CD, then "restore dual boot".
When I restored it, it make to boot in DreamScreen or Window7.

Is there any way, anyone know, how to make it have either:

a) DreamScreen and Ubuntu
b) All three: DreamScreen + Ubuntu + Window 7

I will contact HP company, but they may decline any help saying "we
only support Window7 and DreamScreen", so I will be grateful if you
can provide any guidance / help.

With regards,

-- 
H.S.Rai