K 10 svn:author V 3 imp K 8 svn:date V 27 2010-07-04T07:42:52.386299Z K 7 svn:log V 301 Add a safety-belt. If the identified disk has 0 blocks, don't attach it. This can happen in some cases when plugging in SD/SmartCard PC Cards with empty slots. It is better to detect this bogosity, and refuse to attach rather than panic with a division by zero (in one of many places) down stream. END