no carga UEFI en Ubuntu

[elbuglione]

al finalizar la instalación, Ubuntu 16.04 no logra instalar el cargador utilizando UEFI.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.51
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CasperVersion: 1.368
Date: Fri Apr 15 23:06:38 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
ProcEnviron:
 LANGUAGE=es_AR.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_AR.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alberto Salvia Novella (es20490446e)]

Haz esto:

1. Edita este reporte de fallo para que esté en Inglés, pues aquí en Launchpad sólo se utiliza esa lengua.
2. Cambia el status de este bug de nuevo a "confirmed".

Muchas gracias.

[Phillip Susi (psusi)]

Your disk is currently partitioned to boot in bios mode, but you booted the 16.04 installer in EFI mode. A warning message prompted you that this could be a problem and recommended performing a bios mode install instead, but you chose not to. You either need to perform the bios mode install, or partition the disk using GPT and set up an EFI system partition to install in EFI mode. This will be done for you if you choose the "use entire disk" guided install option.