ubuntu-gnome@ubuntu-gnome:~$ sudo mount /dev/sda5 /mnt
ubuntu-gnome@ubuntu-gnome:~$ sudo mount /dev/sda3 /mnt/boot
ubuntu-gnome@ubuntu-gnome:~$ sudo mount /dev/sda1 /mnt/boot/efi
mount: mount point /mnt/boot/efi does not exist
ubuntu-gnome@ubuntu-gnome:~$ sudo mkdir /mnt/boot/efi
ubuntu-gnome@ubuntu-gnome:~$ sudo mount /dev/sda1 /mnt/boot/efi
ubuntu-gnome@ubuntu-gnome:~$ sudo mount -o bind /dev /mnt/dev
ubuntu-gnome@ubuntu-gnome:~$ sudo mount -o bind /sys /mnt/sys
ubuntu-gnome@ubuntu-gnome:~$ sudo mount -t proc /proc /mnt/proc
ubuntu-gnome@ubuntu-gnome:~$ sudo cp /proc/mounts /mnt/etc/mtab
ubuntu-gnome@ubuntu-gnome:~$ sudo chroot /mnt /bin/bash
root@ubuntu-gnome:/# grub-install /dev/sda
BootCurrent: 0005
Timeout: 0 seconds
BootOrder: 0002,0005,0003,0004,0000,0001
Boot0000* Hard Drive
Boot0001* CD/DVD Drive
Boot0003* usb
Boot0004* usb
Boot0005* UEFI: USB Flash Disk 1100
Boot0002* ubuntu
Installation finished. No error reported.
root@ubuntu-gnome:/# update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.11.0-12-generic
Found initrd image: /boot/initrd.img-3.11.0-12-generic
done
root@ubuntu-gnome:/#