I tried to install Ubuntu to my laptop several times. There were a strange failure since 12.10 (till 13.10). I cannot install 64bit Ubuntu with only the 64bit. I have to install the 32bit one first.
Every time after the default install, GRUB fails to boot and complain missing i386-pc in my /boot folder. The failure message looks exactly like this on 13.10 installation. That is very strange since I've got a 64bit compatible laptop (Lenovo B470).
My stupid solution would be to install the 32bit one first, then install the 64bit one without reformatting /boot partition. My laptop works just fine afterwards.
In this case, either the installer or GRUB2 is having a problem. What do you think? Which package should I file my bug report with? Who is responsible to fix this?