如果显示如下界面：
系统W7
操作类型:32位
详细见附件作者: licess 时间: 2012-7-12 09:29
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
file:///mnt/repodata/repomd.xml: [Errno 14] Could not open/read file:///mnt/repodata/repomd.xml
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: yum. Please verify its path and try again
Name server cannot be used, exiting12 Jul 00:21:13 ntpdate[2408]: name server cannot be used, reason: Temporary failure in name resolution
