Unix disk images and archiving

Ok, I've gotten the Pinnacle Micro Sierra 1.3GB MO drive to work using the below disktab: # Pinnacle Micro Sierra optical disk drive # ECMA 512 byte/sector media # Disktab generated by Jessica Hayden from SunOS /etc/format.dat entry # and NextAnswers document 1533 PINNACLEOHD-1200|Pinnacle Sierra 1.2GB OHD|OHD-1200:\ :ty=removable_rw_scsi:nc#5359:nt#7:ns#31:ss#512:rm#3600:\ :fp#320:bp#256:ng#0:gs#0:ga#0:ao#0:\ :os=sdmach:z0#64:z1#192:ro=a:\ :pa#0:sa#1162903:ba#8192:fa#1024:ca#32:da#4096:ra#1:oa-space:\ ia:ta=4.3BSD:aa: I initialized it with the following commands: disk -t "OHD-1200" -i /dev/rsd1a newfs -n -v /dev/rsd1a I then ejected the disk and reinserted it. NS mounted it and reads and writes to/from it just fine. It gives me nearly 600MB of space. My next question would be what is the best way of making a bootable copy of my internal MO disk to the Pinnacle MO? If I issue the following command: dd if=/dev/rod0a of=/dev/rsd1a I get a read error on rod0a and dd aborts. If I issue the command: dd if=/dev/od0a of=/dev/sd1a dd copies data from the internal MO to the external MO but doesn't copy the data in the subdirectories. Any suggestions? Would dump be better for this? Thanks Jeff -- Home of the TRS-80 Model 2000 FAQ File http://www.cchaven.com http://www.geocities.com/siliconvalley/lakes/6757