Upgrade Fedora 14 to Fedora 15 howto

This upgrade when smoother than any so far, did not lose any Network settings for example! This is all you need to do:

# As root you would like to have a clean start to the
# upgrade, so get an update out of the way.
#
$ yum update rpm

$ yum -y update

$ yum clean all

# Should a new kernel install/update require it,
# reboot before continuing with the rest.
#
# Then install the preupgrade package.
#
$ yum install preupgrade

# For console upgrade, use:
#
$ preupgrade-cli "Fedora 15 (Lovelock)"

# If you like gui's to upgrade, use this.
#
$ preupgrade

That was it, just watch the action, drink some coffee/beer and reboot when asked to. Presto change-o you now have a Fedora 15 installation!