Also, the VAX-11/750 do not even use VMB... The 750 _could_ use VMB; you just had to load it from TU58. The 750 just didn't need VMB to boot from disk - it just had a "shortcut" (some might say a "hack") for that path. And I believe the hack worked just as well for booting Unix too; that's why the 750 was very popular with Unix sites. And of course, nobody ever wanted to boot anything but VMS... ;-) Well, DEC didn't, and they did build the machine after all. Didn't seem to stop any of the Unix crowd from using it too. Bob