[tex-live] tlmgr update -self fails, why?

[mario chiari]

On Mon, 2014-02-24 at 10:59 +0100, Zdenek Wagner wrote:
> Your TeX Live is too old, current version is 2013. You cannot update
> the old version, you have to reinstall. 

Ok, i'll try to install a updated version, by the guidelines
http://www.tug.org/texlive/quickinstall.html 

Just a question. I would like to keep my present install too, and to
install the updated one under a /usr/local2 directory. Is it possible?
How?

thks cheers
mario