I got an old machine with 16.04. The SSD is split in two partitions, one for root and one for home. The home partition is encrypted. Not sure of the details, I just used the wizard when 16.04 was installed.
Can I use a 18.04 boot-able USB to install Ubuntu in the root partition (wipe it) and use the encrypted home partition I already have? Say I use the same username and password for the new install, would that work?