Hello Artur... So, the same thing happened again yesterday: The RAID10 was out of sync due to an unclean shutdown and while Linux was at 70.8% of the resync, I restarted to Win 10 with RST 15.2.0.1020 and it recognized the RAID as clean without any visible/noticeable verification at all. I did a manual verification run in Win this time, just for the sake of it, and it came up fine. Nevertheless, this really has me worried. Did you get / see my last mail with the information you requested? By the way, kernel version was 4.10.8 with mdadm/mdmon 4.0. Thanks, Matthias -- Dipl.-Inf. (FH) Matthias Dahl | Software Engineer | binary-island.eu Hire me for contract work: Open Source, Proprietary, Web/Mobile/Desktop -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html