Oneiric "installer crashed" in beta1 when it starts to copy

[manny]

was able to install alpha 3 without burning to CD installed on my HD (using unetbootin) and using these commands:

apt config error:
https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/658865
sudo rm /usr/lib/ubiquity/apt-setup/generators/40cdrom

migration assistant error/crash:
ubiquity --no-migration-assistant

alpha 3 installed successfully.

now am trying to install the beta1, but it says that it cant unmount /cdrom

so i used the following command:

sudo umount -l /cdrom

it doesnt nag anymore, but now it crashes when starts to copy....

if anyone can help i wish to also install this beta without burning to cd or usb-stick or anything, just from my HD using unetbootin which is easier and loads/copies faster, than those other methods.

Thanks!

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: ubiquity 2.7.25
ProcVersionSignature: Ubuntu 3.0.0-9.15-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
Architecture: i386
Date: Sun Sep 4 14:36:10 2011
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Brian Murray (brian-murray)]

The tool you've used (likely unetbootin) to create the USB image of Ubuntu did not copy all the needed files for installation. You need /casper/filesystem.size on the USB disk for the installation to complete.