用下面简单的方法就可以把系统升级到FC9：
1.安装fedora-release和fedora-release-notes，下载地址：
http://download.fedora.redhat.com/pub/fedora/linux/releases/9/Everything/i386/os/Packages/fedora-release-9-2.noarch.rpm
http://download.fedora.redhat.com/pub/fedora/linux/releases/9/Everything/i386/os/Packages/fedora-release-notes-9.0.0-1.noarch.rpm
运行：
rpm -Uvh fedora-release-9-2.noarch.rpm fedora-release-notes-9.0.0-1.noarch.rpm
2.升级yum
运行：
yum update
3.重启系统。
deepbreath 于 2008-09-29 23:44:02发表:
用这个楼主方法试下不知效率怎么样http://www.linuxdiyf.com/bbs/thread-104685-1-1.html:0wl;l1 :0wl;l1
wingsmart 于 2008-09-28 21:48:44发表:
估计有很多要更新，会很久吧
weixq316 于 2008-08-19 16:15:40发表:
这会不会要一天一夜啊~~~~~~~~~~~