During the installation process, Ubuntu installs the EFI bootloader
instead of the regular PC bootloader.

This results in a system that is broken in one of the following ways, depending 
on the configuration of your system:
* Boots to windows as if Ubuntu wasn't there (even though it completed 
installation)
* Fails to boot after completed installation

Workaround:
This should successfully complete the installation process, through a series of 
manual commands.

* Boot from CD/USB live image
* Connect to the network
* Click on the ubuntu partition you previously installed to, so that it is open 
in nautilus.
* right-click on this partition in nautilus (it's in the list on the left), and 
click 'properties'
* copy the name of the mount, and replace "<name of mount>" below with that 
text.
   It will probably be something like "563451BD58A19D16"
* execute a terminal, and type the following commands.  If any give you an 
error, stop, and send me a message (don't post here for further support):

cd "/media/<name of mount>"

sudo mount -o bind /proc proc
sudo mount -o bind /sys sys
sudo mount -o bind /dev dev
chroot ./

apt-get update
apt-get install -y grub-pc

exit
sudo umount proc
sudo umount sys
sudo umount dev
sudo sync
sudo shutdown -r now


..at this point, the system should reboot, and give you the choice between 
Ubuntu and Windows (or just Ubuntu, depending on your install).


** Summary changed:

- Oneiric 64-bit installer Grub no HDD boot Lenovo B570
+ [Oneiric Precise] 64-bit installer incorrectly detects EFI instead of MBR for 
Grub, boot fails, Lenovo B570

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https://bugs.launchpad.net/bugs/908109

Title:
  [Oneiric Precise] 64-bit installer incorrectly detects EFI instead of
  MBR for Grub, boot fails, Lenovo B570

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