From: Rod Smallwood
dd is a linux command.
UNIX, actually. (V5, I think:
https://minnie.tuhs.org/cgi-bin/utree.pl?file=V5/usr/source/s1/dd.c
There no 'man'page for it in V4. Anyway...)
I only have windows PC's.
There are Windoze versions. I've used this one:
http://www.chrysocome.net/dd
with success (under XP; probably works under others, too).
Noel