Upgrade from 10.04 LTS to 12.04.1 on i386 Ubuntu (headless) Server fails

[TJ]

package initramfs-tools 0.99ubuntu13 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

'do-release-upgrade' reported an error and tried to launch a browser using "xdg-open" but failed (presumably since it would have to use a text-only user agent to file the bug.

Failure is due to /boot/ file-system hitting 100%

df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda5 233335 222523 0 100% /boot

This is the same as bug #798414 but should be handled properly, not just giving a warning. This should be part of the pre-upgrade checks that ensure sufficient space.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: initramfs-tools 0.99ubuntu13
ProcVersionSignature: Ubuntu 2.6.32-36.79-generic-pae 2.6.32.46+drm33.20
Uname: Linux 2.6.32-36-generic-pae i686
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
Date: Tue Sep 4 16:26:55 2012
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 1
PackageArchitecture: all
SourcePackage: initramfs-tools
Title: package initramfs-tools 0.99ubuntu13 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-09-04 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.