27 Oct
2001
27 Oct
'01
6:03 a.m.
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(a)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:
DUMP/TERM DU0:
If the DUMP works, then you are at least able to read the drive.
In addition, also try the command:
SHOW DEV:DU
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
problems?
Sincerely yours,
Jerome Fine