Linux On My Samsung

I am trying to boot Ubuntu 12.04(64 bit) on the laptop Samsung ATIV book 8. Samsung ATIV book 8 came with Windows 7. I am successfully able to install Linux Ubuntu 12.04 on the SSD using USB pen drive which has erased Windows 7. But when I go to the BIOS configuration, I am not able to select the SSD, it has disappeared after installing Linux on SSD and and the options are blank, no boot device options. I tried different combinations of changing the following boot options: - Secure boot control, OS mode selection, Fast BIOS mode.
But it doesn't give back the SSD option to boot.

I later followed install Ubuntu in UEFI mode *https://help.ubuntu.com/community/UEFI), not the boot repair option. But still the same problem, I don't see SSD device as boot device option in BIOS.
Is anybody successful in installing Ubuntu on ATIV 8 ?

Thanks.

Finally I was able to install Ubuntu with following boot options:
CSM mode
Secure boot OFF
Fast boot OFF