FreeBSD 7.2 to 8.1

http://www.freebsd.org/releases/8.1R/announce.html を参考にUpgradeしました.

# freebsd-update upgrade -r 8.1-RELEASE
# freebsd-update install
# shutdown -r now
# freebsd-update install
# portupgrade -arRy
# freebsd-update install
# shutdown -r now