I have a v20z to which I applied the latest maintenance patches. After a
rebbot, it sits there n a loop with the messages:

----
/kernel/drv/amd64/sad: undefined symbol 'netstack_find_by_cred'
/kernel/drv/amd64/sad: undefined symbol 'netstack_rele'
WARNING: mod_load: cannot load module 'sad'

panic[cpu0]/thread=fffffffffbc22dc0: mod_hold_stub: Couldn't load stub
module drv/sad
----

I assume I need to do the equivalent of a "boot -r" but how?

Any ideas? The system is located in a co-lo quite a distance away, and
although I can access the SP, I don't seem to be able to get to the GRUB
menu.

Many thanks for any help

--

Sak Wathanasin
Network Analysis Limited
http://www.network-analysis.ltd.uk