[comp.sys.dec] CDC Wren-v for DS3100

wcwang@iuvax.cs.indiana.edu (Bill Wang) (09/13/89)

I need some help about booting ds3100 (pmax) off
cdc wren-v 600 meg scsi disk.

We currently have a ds3100 with a dec disk on it and a tk50
cartridge drive.

We are getting two ds3100 without disk from dec and two 
cdc wren-v scsi drives from someone else.  My questions
are how to format these two disks, and make file systems
for the ds3100s and hang them on to these two ds3100 and
let them boot from the two cdc drives?

Thanks in advance!

PS.

Please tell me the detail procedures if you can.

Bill Wang
US Mail = Psychology Department, Indiana University, Bloomington, IN 47405
UUCP  = {rutgers, att, ames}!iuvax!wcwang
Internet = wcwang@iuvax.cs.indiana.edu


-- 
Bill Wang
US Mail = Psychology Department, Indiana University, Bloomington, IN 47405
UUCP  = {rutgers, att, ames}!iuvax!wcwang
Internet = wcwang@iuvax.cs.indiana.edu

kandler@lan.informatik.tu-muenchen.dbp.de (Matthias Kandler) (09/14/89)

I recently installed a ds3100 with a WREN V disk. So I'll report my
experiences.

It's not easy to get the right cables to connect the disk to the ds3100.
So far we are only able to connect the disk via the TK50. But we 
heard a rumour that DEC sells the right cables. (Our DEC-rep didn't
say a word about that. See last 2 lines of this article :-)

The Ultrix installation tape does not support third party disks. But this
can't stop us. There are ways out:

	   Choose 'System Management' on the first prompt of the installation
	   procedure. Then 'ed install.1'. After the lines

		RZ55)
			ns=36;nt=15;;
	   add the lines

		UNKNOWN)
			ns=48;nt=15;root_D=WREN;;	.

	   Partition the disk as you need it.  

		     cd /dev; MAKEDEV rz0
	      [e.g.] chpt -pa 0 32768 -pb 32768 32768 /dev/rrz0c
 		     chpt -pd 65536 32768 -pg 98304 1075626 /dev/rrz0c 
	
	   Then do 'cd /;. .profile'. This restarts the installation.
	   Choose 'Advanced installation' now.

	   In the second phase of the installation (after booting from disk)
	   you have to stop the installation by ^c. Then 'ed /etc/disktab'.
	   Add an entry like

	WREN|UNKNOWN|CDC WREN V 94181-702 (unknown by DEC finder):\
        :ty=winchester:ns#48:nt#15:nc#1543:\
        pa#32768:ba#8192:fa#1024:\
		.
		.	[ Partitioning information is irrelevant]


	  Then 'cd /; . .profile'

I built a customized installation TK50 that does the above. If you want to
know how to do this send me mail. I'm now in the process to setup a
'Remote Installation Service' from a VAX for the ds3100.

The right way to solve the 'UNKNOWN problem' above would be to teach finder
(and also autoconf) to recognize the CDC WREN V. We didn't get Ultrix 3.1
sources yet. So I could not try it.

The ds3100,WREN V configuration is running fine now for ca. four weeks.
~~
Matthias Kandler  Inst. f. Informatik     LOC=lan.informatik.tu-muenchen.dbp.de
                  TU Muenchen             kandler@LOC
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