Roberto Spadim put forth on 2/6/2011 10:49 AM: > [root@myhost block]# dd if=/dev/sda of=/dev/zero bs=8196 > [root@myhost block]# dd if=/dev/md0 of=/dev/zero bs=8196 /dev/zero is a read source, not a write target. I'm surprised this doesn't bomb out. Use /dev/null for output. -- Stan -- 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