1. Installation Preparation A USB drive with PE installed On MacOS, you can use balenaEtcher to burn the wepe for mac image. Download the synoboot file http://down.nas2x.com/synology/dsm/6.2/synoboot/ Download the DSM.pat file https://archive.synology.com/download/Os/DSM 2. Getting Started Boot through PE and enter the system Write synoboot to the built-in SSD storage If you boot from a USB drive, you may also need to modify the PID and VID values in grup.