PT> Yep, use mdadm --stop --force. unfortunately, same result: [root@gateway ~]# mdadm --stop --force /dev/md1 mdadm: fail to stop array /dev/md1: Device or resource busy Perhaps a running process, mounted filesystem or active volume group? cu -- 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