All we know is that boot-up fails on 64-bit hardware.  We don&#x27;t have nearly enough information to accurately guess which boot-time component is failing or what API this component is using.<p>A trivial example would be casting an `unsigned int` to a `time_t` (i.e., `long`).  It will work with negative numbers on 32-bit systems, but will fail with negative numbers on 64-bit systems.