Mountain Lion 10.8 won't appear on boot list

[papi1106]

Hi everyone,

 

I've got osx 10.7 install on a partition and I've just installed on a different partition (same hard drive) 10.8 using this guide:

 

http://translate.google.com/translate?sl=it&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fwww.insanelymac.com%2Fforum%2Findex.php%3Fshowtopic%3D276216

 

The installation went great but when I tried to boot after the installation using the USB I couldn't find the partition 10.8 is on.

 

When I'm booting to 10.7 I can see the partition 10.8

I tired to install chameleon on the 10.8 partition from 10.7 partition but can't manage to boot to it.

 

What am I doing wrong? do I need to set a multiboot? How do I do that

 

My spec is: asus p6t deluxe v2, i7 920, 12gb ram, navidia GeForce 950

 

Thanks allot!