installing grub boot loader fails on thinkpad w520

[JoshuaPurcell]

grub install fails both when using ubuntu installer from 'try now' or 'install' option. BIOS has an option to allow for 'legacy' OSes (non-UEFI) to have priority over UEFI installs, and this option is enabled.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity 2.12.0
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.2-0ubuntu4
Architecture: amd64
CasperVersion: 1.324
Date: Thu Sep 20 12:04:44 2012
InstallCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120905.2)
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[JoshuaPurcell (joshua-purcell)]

This install attempt is done using the beta1 quantal CD.