Comment 15 for bug 630529

Okay, I have a patch that should hopefully at least solve the surface level problem for you. Could you please run the install one last time for me, following these instructions:

Press "Try Ubuntu" at the first screen. When the desktop appears, connect to the Internet, open a terminal window, then run the following commands:
sudo apt-get -y install patch
wget https://bugs.edge.launchpad.net/ubuntu/+source/ubiquity/+bug/630529/+attachment/1672796/+files/630529.patch -O /tmp/patch
cd /usr/lib/ubiquity
sudo patch -p0 < /tmp/patch # Make sure this command completes successfully
sed -i 's/#set -x/set -x/' /usr/share/grub-installer/grub-installer
ubiquity -d

Run through the install again and let me know if the bootloader is still getting installed to the pen drive. If it's not, please attach /var/log/installer/debug and /var/log/syslog from that installation attempt.

Thanks a bunch for all your help in getting to the bottom of this!