我是新来的。我刚刚安装了Ubuntu,感到非常开心。我试图从Ubuntu软件中心安装一个程序。它显示“可从'宇宙'源获取”。所以我点击了“使用此源”。然后,下载开始了。但是我遇到了一个问题。不久之后,它出现了一个错误。它说“无法下载存储库信息。请检查您的互联网连接”。我感到非常困惑。
以下是错误详细信息:
W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/main/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/restricted/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/universe/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/multiverse/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/main/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/restricted/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/universe/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring/multiverse/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/main/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/restricted/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/universe/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/multiverse/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/main/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/restricted/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/universe/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-updates/multiverse/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/main/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/restricted/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/universe/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/multiverse/source/Sources 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/main/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/restricted/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/universe/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://pk.archive.ubuntu.com/ubuntu/dists/raring-backports/multiverse/binary-i386/Packages 404 Not Found
, E:Some index files failed to download. They have been ignored, or old ones used instead.
请帮忙吗?:(
我正在尝试安装两个程序。