I want to uninstall 12.04 and install Ubuntu 13.04 instead.
When I was installing Ubuntu 12.04 from Windows 7 opened the boot menu F12.
I have read that on Ubuntu to enter the boot menu I have to press F2 or Fn-F2. I have tried both ways but it still doesn't open the boot menu.
So, how can I open the boot menu on Ubuntu 12.04?
Note: I'm using a Lenovo ThinkPad X120e.