更新我的xubuntu 12.04.02的麻烦

Question

当我尝试在“更新管理器”中更新我的xubuntu时，我会得到以下错误：

Failed to download repository information

当我试图通过终端更新时，我得到了以下信息：

W: Failed to fetch cdrom://Xubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)/dists/precise/main/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Xubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)/dists/precise/multiverse/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Xubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)/dists/precise/restricted/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Xubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)/dists/precise/universe/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Some index files failed to download. They have been ignored, or old ones used instead.

我该怎么办？它已经10天没有更新了。

Answer 1

请按照以下链接回答您的问题。

为什么更新管理器给出“无法获取光盘。”错误？

玩得开心！