ubuntu 15.10 升级至 16.04 时出现问题

ubuntu 15.10 升级至 16.04 时出现问题

今天我尝试更新我的操作系统。现在我使用的是 ubuntu 15.10,当我尝试更新时,它显示此错误:

Failed to fetch 
http://bd.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_50.0.2+build1-0ubuntu0.16.04.1_amd64.deb 
Hash Sum mismatch 
Failed to fetch 
http://bd.archive.ubuntu.com/ubuntu/pool/main/f/fonts-noto-cjk/fonts-noto-cjk_1.004+repack2-1~ubuntu1_all.deb 
Hash Sum mismatch


rr Upgrade tool signature                                                     
  Temporary failure resolving 'bd.archive.ubuntu.com'                          
Get:1 Upgrade tool [1,266 kB]                                                  
Fetched 1,266 kB in 6s (55.7 kB/s)                                             
WARNING:root:file 'xenial.tar.gz.gpg' missing
Failed to fetch
Fetching the upgrade failed. There may be a network problem.

有人可以帮忙吗?

答案1

只需输入以下命令即可修复错误

sudo apt-get clean
sudo apt-get update

然后运行实际的系统更新

sudo apt-get update && sudo apt-get dist-upgrade

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