安装 ubuntu sdk 错误

Question

我有这个错误：

W: Failed to fetch cdrom://Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release amd64 (20130820.1)/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 bzip2:/var/lib/apt/lists/partial/jo.archive.ubuntu.com_ubuntu_dists_precise-updates_main_binary-amd64_Packages  Hash Sum mismatch

E: Some index files failed to download. They have been ignored, or old ones used instead.

Answer 1

这不是一个错误，“W”是一个警告。

此消息可以忽略，它告诉您 Ubuntu 正在寻找“cdrom”上的软件包，但您的系统上没有 cdrom。

从您的源中删除（取消选中）CDROM：

看https://help.ubuntu.com/community/Repositories/Ubuntu了解更多信息。