每当我尝试将 Ubuntu 更新到 14.10 时,都会反复出现以下错误:
Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/universe/source/Sources 404 Not Found [IP: 91.189.91.15 80]
W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/raring/main/source/Sources 404 Not Found [IP: 91.189.91.15 80]
W:Failed to fetch
E:Some index files failed to download. They have been ignored, or old ones used instead.