Doubly so that CON ONLINE (if I remember right) also hang. That's correct - the CON ONLINE ALL hangs on the generated system. The Baseline system works OK. Maybe a misconfiguration of some sort...? Well, what? Like you said, the M+ SYSGEN is pretty simple and almost all the questions, even w/o autoconfigure, take the default answers. Either that, or there's something that's not supported by 4.3 (even though it says that it is). Actually I'd easily believe that it was a misconfiguration except for the fact that ACF also hangs. That says to me that there's something about this configuration that either isn't supported or doesn't actually work with M+ v4.3. Or there's a bug in simh - that'd be ugly... Bob