flax

Hi everybody! Thx Polanskiman for very clear tutorials! I am trying to install Xpenology on a Mac Mini 7,1. I created the USB drive with all the right parameters (I guess). The installation went well but ... when the systems reboots, it doesn't load Xpenology. Instead, there is on screen the blinking gray folder with the question mark inside. Meaning, the machine does not find any OS. I have tried with the DS916 (DSM_DS916+_15217.pat) and with DS3615 (DSM_DS3615xs_15284.pat). I would need help. Thanks