Ubuntu 16.10更新问题（某些存储库yakkety发布没有发布）
有类似的消息（“Ubuntu存储库没有发布文件”……但没有一个适用于我）。
我尝试更新系统（apt-get update），但是我遇到了一些错误。
具体而言（主要错误）：[代码] E：存储库’ http://archive.ubuntu.com/ubuntu yakkety Release’没有发布文件。，W：无法安全地从这样的存储库进行更新，因此默认情况下禁用。，W：有关存储库创建和用户配置详细信息，请参阅apt-secure（8）联机帮助页.E：存储库’ http://archive.ubuntu.com/ubuntu yakkety-updates Release’不会有一个Release文件。，W：无法安全地从这样的存储库进行更新，因此默认情况下禁用.W：有关存储库创建和用户配置详细信息，请参阅apt-secure（8）联机帮助页。，E：存储库’ http://archive.ubuntu.com/ubuntu yakkety-security Release’没有发布文件。 [/码]
我的Ubuntu版本：描述：Ubuntu 16.10代号：yakkety
我尝试了很多在不同线程和不同来源中找到的解决方案，例如：sudo apt-get autoclean sudo apt-get clean sudo apt-get update
我从“软件和更新”的“其他软件”中禁用了所有PPA（以防万一..）。
而且，我评论了一对sources.list文件（只是为了尝试）：
deb http://archive.ubuntu.com/ubuntu yakkety-backports main universe limited multiverse deb http://archive.canonical.com/ubuntu yakkety partner
…但主要错误仍然存在（参见顶部的“主要错误”）……
当我尝试：sudo apt-get update
我懂了 ：
... Ign:79 http://archive.ubuntu.com/ubuntu yakkety-security/universe amd64 Packages Ign:80 http://archive.ubuntu.com/ubuntu yakkety-security/universe i386 Packages Ign:81 http://archive.ubuntu.com/ubuntu yakkety-security/universe all Packages Reading package lists... Done W: The repository 'http://archive.ubuntu.com/ubuntu yakkety Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: The repository 'http://archive.ubuntu.com/ubuntu yakkety-updates Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: The repository 'http://archive.ubuntu.com/ubuntu yakkety-security Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/yakkety/main/binary-i386/Packages 404 Not Found [IP: 91.189.88.149 80] E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/yakkety-updates/main/binary-i386/Packages 404 Not Found [IP: 91.189.88.149 80] E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/yakkety-security/main/binary-amd64/Packages 404 Not Found [IP: 91.189.88.149 80] E: Some index files failed to download. They have been ignored, or old ones used instead. 有任何想法吗？ 提前致谢！
Ubuntu 16.10自2017年7月20日起为EOL。
将http://archive更改为/etc/apt/sources.list文件中的http://old-releases ，然后运行
sudo apt update && sudo apt upgrade
再次。
然后更新到支持的版本。