Installer Crashed while trying to install grub on /dev/sdb (usb memory stick which live installation CD)

[Mark]

Was allowed to select /dev/sdb to install grub.
/dev/sdb had installation CD data

i had copied LiveCD using dd

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.10.16
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic i686
ApportVersion: 2.0.1-0ubuntu5
Architecture: i386
CasperVersion: 1.315
Date: Wed Jun 13 15:00:22 2012
InstallCmdLine: file=/cdrom/preseed/lubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --
LiveMediaBuild: Lubuntu 12.04 "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 TERM=unknown
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
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)]

You can't do that; you need to install grub to your hard disk.

[Launchpad Janitor (janitor)]

[Expired for grub-installer (Ubuntu) because there has been no activity for 60 days.]

[Mischa (m-d-s-x-jonker)]

Maybe this should be an enhancement request then. I don't want to touch my hard disk. And if the live CD ISO can boot from a USB stick, why can't Ubuntu itself not launch from an USB stick?

Also, if it is not supported, why can I select this option in the installer as if it is supported?

Other people seem to have been successful with installing the boot loader on the USB stick in the past:
https://askubuntu.com/questions/170454/can-i-install-ubuntu-to-my-32-gb-usb-pen-drive

[Mischa (m-d-s-x-jonker)]

BTW: When I read the original bug more carefully it looks like someone is trying to install the boot loader on the very same USB stick as the live CD. This is not what I was trying; I did the following instead:
* one SD card with Live CD
* one empty USB stick to install Ubuntu on.

[Phillip Susi (psusi)]

Please let your installer crash file your own bug with your own logs instead of reopening someone else's.