installer crashes if you don't create a /boot partition

[cheater]

i created a logical partition for swap and one for / using btrfs (both in the same extended partition). this is on a macbook pro retina 15.4". i am booting using rEFIt off a usb drive that contains the installer that has been "converted to support efi". /dev/sda is a GPT partition, and it contains osx. the installer could not install grub onto that partition and rightly so (it would just mess up mac os). suggested fix: detect this situation and require a /boot partition.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity 2.12.16
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
CasperVersion: 1.328
Date: Sun Feb 24 18:14:39 2013
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Release amd64+mac (20121017.3)
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=en_US.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.

[Phillip Susi (psusi)]

There is no need for a /boot partition. If you want to install grub to a GPT partitioned disk but still boot in bios mode, you need to create a bios_grub partition.

[cheater (cheater00)]

@psusi how does this make the bug invalid? The installer crashed. See log:

Feb 24 17:14:36 ubuntu plugininstall.py: "GrubInstaller failed with code %d" % ret)
Feb 24 17:14:36 ubuntu plugininstall.py: ubiquity.install_misc.InstallStepError: GrubInstaller failed with code 1

[cheater (cheater00)]

Changed back to "confirmed" because the installer shouldn't crash regardless of that comment.