In case people haven't heard about this, various Samsung drives of recent times have problems that can brick them unless the firmware is updated.
If you have one, get the firmware updated asap.
Different bugs affect:
980 Pro NVMe & 990 Pro NVMe,
870 EVO SATAIII
updates available from samsung and their magician software. Does anyone know if pihole stops Samsung magician dialling home? I don't like the EULA terms but can live with it if the pihole will intercept.