Thank you for responding
1.. The first link you mention was the 3rd topic I found and that put me off grand time, many of the words are foreign and guesswork to me.
2.. The second link, no I did not find that I had already given up, but I am greatfull for it as it looks like worth reading and understandable to me.
3.. I don't really want to know but I am trying to prove that the member in this thread below for some reason seems to have leftovers from a dm exercise and I am struggling. I find that I have above 3 lines and he has more.
It is this more that seems to introduce more than needed for his system, fdisk -l reveals extra content that maps the external USB drive a second time. What I am writing may bear some truth or it may be completely wrong in which case I have made a fool of myself (again) http://www.pclinuxos.com/forum/index.php/topic,65388.msg535933.html#msg535933
Now I will go and read the second link.