Download clonezilla and burn in USB drive.boot from USB drive and clone original drive to ssd. Replace hdd with clone ssd and boot as normal (as long as hhd and your have same capacity). The only thing that you need to change if you doing this step is to setup back boot order correctly in uefi bios

Partition ssd = not suitable since read write life span will be reduce by half (causing ssd to fail) - based on my experience.