I became very unhappy with Synology when I discovered that boot loading was signed, and I couldn't just put Debian on this box that was running a hugely overwei

I became very unhappy with Synology when I discovered that boot loading was signed, and I couldn't just put Debian on this box that was running a hugely overweight customised Ubuntu with background services that were difficult or impossible to switch off. The NAS is an underpowered DS216 (two 5.25" drives mirrored, 800MHz ARM, 256MB RAM) that I'd bought new, foolishly assuming the official OS would work just fine on it. More fool me, eh? I still have the device - but I am never buying another, and I actively disrecommend Synology going forward. My next NAS box will probably be an old Microserver running FreeNAS or some reasonable OS. The Synology's predecessor was a tiny Linux box that I had to install my desired services on by hand, so I know it's feasible.