Long time ago I was asked: Every now and again I've been thinking about this. But what is the worth of such check sum if the partitions is modified because of scrubbing? Because of absence of clarity (for me) I have never implemented it. On the other hand every 1024 bytes of user data in every partition has its own SHA1 check sum (called 'H0'). There are also H1 (hash of 31*H0), H2 (hash of 8*H1), H3 (hash of 8*H2) and for the whole partition one H4 (hash of all H3) check sums. To validate a complete or a scrubbed partition it is enought to calculate the check sums and compare them with the stored sums. For a scrubbed image it is enough to compare the check sums of the used sectors. wit VERIFY does exactly this. And now my questions:[*]Is there really a need to calculate md5/sha1 check sums and print them out?[*]And if "yes": Why?[*]And if again "yes": Which check sums (disc|partitions, md*|sha*|crc*) are needed? And again: To find out bad dumps no more than the internal check sums are needed.