昨天把centos升了下级。cn99的源失效后，很难找到速度能与之相比的源就一直没更新，突然发现中科大的源又恢复了，就换了源升了下级，电信访问速度还是很快的！
安装后请按照以下步骤修改CenOS-Base.repo,以后就可以方便的用yum安装软件了. cd /etc/yum.repos.d mv CentOS-Base.repo CentOS-Base.repo.save wget http://centos.ustc.edu.cn/CentOS-Base.repo.5 mv CentOS-Base.repo.5 CentOS-Base.repo
顺便再记录几个centos的源：
上海交通大学：http://ftp.sjtu.edu.cn/centos/
清华大学：http://mirror.lib.tsinghua.edu.cn/centos/
山东电信：http://mirrors.ta139.com/centos/
我用的centos5.2，默认不支持NTFS格式的分区，无法共享windows分区下的文件，需要安装NTFS支持！
经过搜索找到解决之道！
首先，查看自己系统的内核版本！
# uname -r 2.6.18-92.1.13.el5
其次，在这里找到对应的内核模块文件下载
http://sourceforge.net/project/showfiles.php?group_id=13956&package_id=24313
如我的是：kernel-module-ntfs-2.6.18-92.1.13.el5-2.1.27-0.rr.10.11.i686.rpm
最后，安装下载来的rpm包，
运行/sbin/modprobe ntfs加载内核模块。
运行dmesg | grep NTFS，可以查看NTFS驱动版本。显示
# dmesg | grep NTFS NTFS driver 2.1.27 [Flags: R/W MODULE].
就可以挂载NT格式的分区了！
vmware体积越来越庞大，对于只需要简单的虚拟应用来说，VirtualBox还是不错的选择！
我的centos5.2直接下载rh5的rpm安装包，装完后能顺利启动，不过就是显示字符全为方块，网络搜索发现解决办法，只需要安装bitmap-fonts-cjk包。
一直用ubuntu，现在我的本本就是ubuntu，一直用cn99的源，电信速度非常快。前两天装了cnetos，一直在找一个稳定且快速的源，就中科大的那个快，其他的都差不多的慢，很怀恋当初ubuntu下用cn99源的感觉，不想一搜之下居然有一个。那就没什么好说的了，用就一个字。
# CentOS-Base.repo # # This file uses a new mirrorlist system developed by Lance Davis for CentOS. # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-5 - Base #mirrorlist=http://mirrorlist.centos.org/?release=$releasever5arch=$basearch& repo=os #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ baseurl=http://mirrors.cn99.com/centos/5/os/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5 #released updates [update] name=CentOS-5 - Updates #mirrorlist=http://mirrorlist.centos.org/?release=4arch=$basearchrepo=updates baseurl=http://mirrors.cn99.com/centos/5/updates/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5 #packages used/produced in the build but not released [addons] name=CentOS-5 - Addons #mirrorlist=http://mirrorlist.centos.org/?release=4arch=$basearchrepo=addons baseurl=http://mirrors.cn99.com/centos/5/addons/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5 #additional packages that may be useful [extras] name=CentOS-5 - Extras #mirrorlist=http://mirrorlist.centos.org/?release=4arch=$basearchrepo=extras baseurl=http://mirrors.cn99.com/centos/5/extras/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-5 - Plus #mirrorlist=http://mirrorlist.centos.org/?release=4arch=$basearchrepo=centosplus baseurl=http://mirrors.cn99.com/centos/5/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5 #contrib - packages by Centos Users [contrib] name=CentOS-5 - Contrib #mirrorlist=http://mirrorlist.centos.org/?release=4arch=$basearchrepo=contrib baseurl=http://mirrors.cn99.com/centos/5/contrib/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5