I have Ubuntu 14.04, I want to do a fresh install of 12.04 so I can play dota 2 with the steam client for linux. I have a startup usb ready with 12.04 but when I restart or turn off it goes directly to 14.04 skipping the instalation.
Entering Bios, under boot and I see that usb boot is enabled, but on the list of boot options usb is not there, my device is not listed. Same with f12.
All I need is to be able to boot from that usb, so I can do a fresh install.
I'm using lenovo g780. And im using this ISO http://releases.ubuntu.com/12.04/ubuntu-12.04.5-desktop-i386.iso
Thanks in advance.