我检查了更新并收到一条错误信息：
Failed to download repository information, Check your internet connection
详细信息：
W:Failed to fetch cdrom://Ubuntu 12.10 _Quantal Quetzal_ - Release i386 (20121017.2)/dists/quantal/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://Ubuntu 12.10 _Quantal Quetzal_ - Release i386 (20121017.2)/dists/quantal/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
E:Some index files failed to download. They have been ignored, or old ones used instead.
我正在运行一台 OEM 笔记本电脑，32 位 1 Gb Ram。
我查看了设置，有一个添加 CD-Rom 的选项？
答案1
看起来您已在软件源中选择了 CD-ROM。这样做会检查您的 CD-ROM 中的源。要取消选中 CD-ROM 选项，请单击系统设置下的软件源，然后转到其他软件选项卡，取消选中 cdrom，如下所示：
