apt-get更新中的问题-Ubuntu12.04？

Question

可能重复: 由于CDROM丢失，无法下载存储库信息

如何解决下列错误消息？

错误消息：

W:Failed to fetch cdrom://Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/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://Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/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://Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/dists/precise/main/binary-amd64/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 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/dists/precise/restricted/binary-amd64/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.

Answer 1

打开更新管理器，转到设置-> ubuntu软件并解压CDROM，然后转到其他软件并取消选中所有CDROM