RD54 and RT-11 5.4D

From: Jerome Fine <jhfine_at_idirect.com>
Date: Sat Oct 27 13:03:42 2001

>Eric Dittman wrote:

> I recently swapped the MV II CPU and memory in my BA23 with a
> PDP-11/73 CPU and memory. I booted RT-11 V5.4D and attempted
> to init the RD54, which failed:
> .init /segment:5 du0:
> DU0:/Initialize; Are you sure? Y
> ?DUP-F-Directory output error DU0:
> The drive was working just fine as a ODS-2 volume. I don't have
> to low-level format, do I?
> Eric Dittman
> dittman_at_dittman.net
> Check out the DEC Enthusiasts Club at http://www.dittman.net/

Jerome Fine replies:

Do you use RT-11 very much? Which monitor and what programs
do you run? Also, how did you boot RT-11?

Is it possible that the WRITE PROTECT button on the front panel
is pressed? You can determine that by sending the command:
If the DUMP works, then you are at least able to read the drive.

In addition, also try the command:
which will also show the map between the logical MSCP units and the
physical hardware. Perhaps the ODS-2 mapping was different.

I presume you are using an RQDX3 (M7555) and DS3 is used on
the drive. Also, which monitor are you using? A DEC distributed
monitor will not have any strange aspects, but a SYSGEN might.
RT11SJ and RT11FB use DU.SYS while RT11XM uses DUX.SYS
as the device driver. And check the cables on the drive a second time.
Finally, does the RX50 work? If not, begin to suspect hardware

Sincerely yours,

Jerome Fine
Received on Sat Oct 27 2001 - 13:03:42 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:34:21 BST