How to change to 64-bit.

[Colin Law]

On 1 December 2010 18:16,  <pkaplan1 at comcast.net> wrote:
>>On Wed, Dec 01, 2010 at 10:00:58AM -0800, Kevin O'Gorman wrote:
>>[...]
>>> What am I missing?  A repository?  A package?  This is a first time for
>>> me,
>>> so I'm completely clueless, and the
>>> only advice I can see is about installing fresh, which I'd really rather
>>> not
>>> do.
>>
>>Kevin,
>>
>>To move from 32- to 64-bit you'll need to do a fresh install using a
>>64-bit iso.
>>
>>--
>>Scott Stevenson <scott at ecubyx.com>
>
> If you haven't already kept /home on a separate partition, you should in the
> future; it will make life easier.
> In any case, back up /home and restore later, it will allow you to keep your
> config files.

As has been pointed out here a number of times it is possible to
install over an existing ubuntu without losing the home directory.
When installing, select Advanced option, select the existing ubuntu
partition as '/' but do _not_ select Format.  This will then replace
all the system files leaving /home as is.  It will still be necessary
to re-install any extra apps required, but the settings should be
retained in /home.

Colin

> You might also want to run
> $dpkg -l > ~/installed
> to save the list of installed packages to a file called "installed" and then
> refer to that that as you install any non-default packages you may have
> installed on your 32-bit machine.
> Good luck,
> Paul
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