Updating ubuntu 7 04
If you choose 'Yes' here it will update all 'trusty' to 'xenial' entries. In other cases, you may be asked if you wish to replace a configuration file that you have modified with the default version from the package that is being installed.
In Ubuntu 16.04, important changes since the preceding LTS release include a transition to the systemd init system in place of Upstart, an emphasis on Python 3 support, and PHP 7 in place of PHP 5.On Digital Ocean systems, it is safe to ignore this warning and proceed with the upgrade, since a local mirror for 16.04 is in fact available. Continue [y N] Details [d] New packages will now be retrieved, then unpacked and installed.Enter y: Updating repository information No valid mirror found While scanning your repository information no mirror entry for the upgrade was found. Even if your system is on a fast connection, this will take a while.If you continue, an additional ssh daemon will be started at port '1022'. Continue [y N] Starting additional sshd To make recovery in case of failure easier, an additional sshd will be started on port '1022'.If anything goes wrong with the running ssh you can still connect to the additional one.