Hi @JavierCairus, From what you mentioned, it sounds like you're reaching the grub menu but upon selecting a grub menu item you go into the "error: no suitable video mode found". I'm just going to go over a few essentials to see if we can eliminate any missed steps: Confirm you've downloaded the correct files to build xpenology (assuming 6.2.3) DSM_DS3615xs_25426.pat - https://global.download.synology.com/download/DSM/release/6.2.3/25426/DSM_DS3615xs_25426.pat