Multi-Boot => Re-installation

[Evan Dandrea]

On Wed, Sep 9, 2009 at 1:05 PM, Stéphane<ste.geo at gmail.com> wrote:
> But I have an another problem when I try to reinstall ubuntu, I can't
> use an existant linux partition ....

Select the existing root partition as the location for the new root
partition, and ensure that the format box is not checked.  The
installer will delete top level directories that it will need to write
(/usr, /var, etc), but will leave /home, /opt and others intact.