我已经安装了 ubuntu 17.04,我想将它升级到 18.04。当我尝试这样做时:
sudo do-release-upgrade
我收到一条消息说An upgrade from 'zesty' to 'bionic' is not supported with this tool
。需要输入才能继续进行此操作。
sudo do-release-upgrade
Checking for a new Ubuntu release
Your Ubuntu release is not supported anymore.
For upgrade information, please visit:
http://www.ubuntu.com/releaseendoflife
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1,257 kB]
Fetched 1,258 kB in 0s (0 B/s)
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg'
extracting 'bionic.tar.gz'
Reading cache
Checking package manager
Can not upgrade
An upgrade from 'zesty' to 'bionic' is not supported with this tool.