>
> In fact... I seem to remember that the Ultrix-11 installation
> manual specified this action during the installation process.
>
> No urban legend.. I remember doing it on a home -11...
>
> sync; sync; sync; halt
>
I'm not sure when the halt and shutdown programs first appeared.
I do recall that at least on V6 (mid 1970s) that the sync
sequence was required whenever the system was shutdown. If the
halt program existed then it only changed run level or issued
a processor halt instruction. On the 11/45 I recall using the
front panel to halt the processor after the sync sequence. THe
halt program may not have appeared (or be commonly used) until
after front panel started to disappear. I do vaguelly recall some
discussion of this when we moved V6 to the 11/03.
--
Dr. Mark Green mark_at_cs.ualberta.ca
McCalla Professor (780) 492-4584
Department of Computing Science (780) 492-1071 (FAX)
University of Alberta, Edmonton, Alberta, T6G 2H1, Canada
Received on Sat Apr 28 2001 - 00:13:05 BST