30 Dec
2012
30 Dec
'12
4:47 p.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of emanuel stiebler
Sent: 30 December 2012 23:44
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Getting an ST-225 disk to work
On 2012-12-30 14:18, Rob Jarratt wrote:
And it
I have a Seagate ST-225 that I want to put into
my Micro PDP-11/73. At
the moment I am just trying to see if the disk works at all and if I
can format it in a MicroVAX 2000. It spins up but the TEST 70 and TEST
71 commands fail on it, unable to determine the type of disk. There
are some jumpers for which I have found some documentation here:
http://stason.org/TULARC/pc/hard-drives-hdd/seagate/ST225-21MB-5-25-
HH
-MFM-S T412.html, but I am not sure which is pin
1, and I am not sure
what settings the MicroVAX 2000 wants, or if it needs the resistor
termination pack.
Can anyone tell me which jumper settings I need for the disk to work
in a 2000? And whether I need the resistor pack installed?
AFAIRC, it should have the resistors in, as it is at the end of the cable. should be recognized by the TEST70, or it was used on
a different system.
Is
it labeled as a rd31? Probably you have to do a real
low level format,
entering all the right parameters in the TEST70 yourself ...
It is not labelled RD31 and may have been used in a completely different
system, probably a PC. I am happy to enter all the TEST 70 parameters (found
a link for this), but it does not prompt me, it gives an error and then just
exits the test.
Regards
Rob