> How much true is it for normal SATA drives? Are there some tests I can > just run on a machine, powercycle it few times, and it tells me if my > disk is non-ATOMIC-SECTORS? No. And even if it did writes to one sector can damage another. The mathematical certainly stuff lives only in the world of maths. In the real world everything is probabilities. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html