If I read it right he's copying the old slave to the new drive and then putting the new drive in as slave, replacing the old one, with the new drive's temporary life as 'master' only for the copy process. The 'idea' is ok but I'm not so sure the implementation of it is 'ok'.

Bad form to call them C and D, though, because that assumes how XP assigned the letters and it isn't the same as Win9x. Plus, once serialized, XP knows which one is which even if you move them to different IDE locations.

[snip]

Even more confusing than I thought.