Icon disposition fail

[macromaster]

I'm having troubles installing my other OS. I just installed Ubuntu but Chimera won't show the partition, here's what i mean:


I can't go further right, so i can't boot on the Ubuntu partition, i don't have the little arrows to navigate. I tried to enter <HidePartitions> command but nothing changed.

Any solution?

 

[macromaster]

Ok here's how it evolved.

My HDDs:

RevoDrive: Win7 x64
HDD SATA3-1: My Documents
HDD SATA3-2: Swap+Ubuntu
HDD SATA2: OSX Lion (with Chimera)

The thing is Chimera doesn't show me Ubuntu partition, donno why. Chimera won't boot my Windows, because he's not familiar with RevoDrive (BootMGR is missing)
As for Grub on Ubuntu partition, it launches Ubuntu quite fine (wireless issue but that's not the subject), and to my great delight, launches Windows on the RevoDrive! But of curse he just reboots when i try to launch Lion from it.

So now, i want to boot everytime on Grub, cause he's the only one who can boot my Windows. How can i make him show Chimera in order to boot Lion from it?

See?
POWER->GRUB->Chimera->OSX Lion

any idea?