[Bug 690911] Re: Installation without formatting fails to remove old kernels

[SeijiSensei]

An ever bigger problem is that the installer leaves behind all the stale
kernels in /boot.  I can see keeping the most recent good kernel, and
even perhaps the next-oldest version, but kernels older than that should
be removed by ubiquity.  If you allocate /boot to a separate partition,
as I do, even a reasonably-sized boot partition (say 256 MB) can fill up
if you're running a development release. I've been running Kubuntu
12.04b2 for a while now, and this morning had half-a-dozen kernel images
in /boot.  All the space was consumed, and the installer was unable to
build a matching initrd image.

It would also result in a much cleaner set of options in the list at
boot.

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https://bugs.launchpad.net/bugs/690911

Title:
  Installation without formatting fails to remove old kernels

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: ubiquity

  When installing without formatting the target partition, the installer
  deletes various system files to avoid conflicts, including /lib,
  however it leaves existing kernels in /boot.  These should also be
  removed since they become broken when their corresponding modules in
  /lib are deleted, and if they are newer than the ones being
  reinstalled ( likely ) they will become the default kernel leaving you
  with an unbootable system.

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