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 > 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 then in v7 the rk's aren't in /dev, so: 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 cannot open: /dev/rrk0 Look reasonable? Will -- GPG Fingerprint: 68F4 B3BD 1730 555A 4462 7D45 3EAA 5B6D A982 BAAF