1.把freebsd Update执行目录设置好
#mkdir /usr/upgrade
#cd /usr/upgrade
#fetch http://www.daemonology.net/freebsd-update/upgrade-to-6.2.tgz
# fetch http://www.daemonology.net/freebsd-update/upgrade-to-6.2.tgz.asc
# gpg --verify upgrade-to-6.2.tgz.asc upgrade-to-6.2.tgz

2.解开upgrade目录，设定环境
# tar upgrade-to-6.2.tgz
# cd upgrade-to-6.2
# sh freebsd-update.sh -f freebsd-update.conf -d /usr/upgrade -r 6.2-RELEASE upgrade
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# sh freebsd-update.sh -f freebsd-update.conf -d /usr/upgrade install
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3.when it finished ,reboot.
# reboot
4.把kernel以外的系统全部安装
# cd /usr/upgrade/upgrade-to-6.2
# sh freebsd-upgrade.sh -f freebsd-upgrade.conf -d /usr/upgrade install
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# reboot
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#uname -a

本文出自 “doff” 博客，谢绝转载！

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