during install, how can i back out of my LVM configuration?

["Robert P. J. Day" <rpjday@crashcourse.ca>]

  almost assuredly a dumb question but i'm testing a 5.0.3 AMD install
and, early in the process, i selected the pre-configured multi-LV
partitioning (home, tmp, usr, var).  at this point, it doesn't seem
like i can back up and manually modify that LVM partitioning scheme.
do i need to start the install over again?  any attempt i make to
modify the LV layout tells me that the "lenny503" (my chosen VG name)
volume group is already in use.  so ... restart install?

rday
--

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

        Linux Consulting, Training and Annoying Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Twitter:                                       http://twitter.com/rpjday
========================================================================