> There is no way to select encryption and lvm to start with.
This is a known limitation of the new server live installer. For 18.04, if you want these features you should continue to use the d-i based install image.
> It doesn't scan the disks, basically if you have already any partition
> on any disk it will not show you anything. Just an option to create
> a new partition.
This is certainly a valid concern; I think we should use this bug report to track that issue.
> There is no way to select encryption and lvm to start with.
This is a known limitation of the new server live installer. For 18.04, if you want these features you should continue to use the d-i based install image.
> It doesn't scan the disks, basically if you have already any partition
> on any disk it will not show you anything. Just an option to create
> a new partition.
This is certainly a valid concern; I think we should use this bug report to track that issue.