On 7/27/20 8:14 PM, Clem Cole wrote:
on v7: dd
if=/dev/rrkN of=ucbtar bs=1 <-- this should pull the
binary with the padded last block in
ouch my screw up... should be 1b
Your instructions held up
until I tried to read from the rk device - here's my attach:
in simh:
set rk0 rk05
att rk0 ucbtar
This is what I have:
; RK05 data disks (4 drives)...
;; SET RK ENABLE
SET RK0 WRITEENABLED
SET RK1 WRITEENABLED
SET RK2 WRITEENABLED
SET RK3 WRITEENABLED
SET RK4 DISABLED
SET RK5 DISABLED
SET RK6 DISABLED
SET RK7 DISABLED
ATTACH RK0 ./scratch.rk05
SHOW RK
then in v7 the rk's aren't in /dev, so:
there is a makefile in /dev that creates them. Take a look and see what its doing.
looked in c.c, rk is major dev 0, and rrk is dev 9, so...
/etc/mknod /dev/rk0 b 0 0
/etc/mknod /dev/rrk0 c 9 0
chmod 640 /dev/*rk*
and
dd if=/dev/rrk0 of=ucbtar bs=1
bs=1b sorry -- my error, but I don't think that's the issue.
try this for grins: dd if=/dev/rrk0 of=/dev/null bs=1b
cannot open: /dev/rrk0
Hmm... be good to see what the errno value is, i.e. why?
Maybe a small C program that tries to open /dev/rrk0 and prints out errno on failure.