...Each time, at step 8, when I copied and pasted the whole block of commands, I got a message that my password was incorrect at the "sudo su" step,
From what I get from your description, you were copy-pasting all the commands in step 8 at once, so 'sudo su' considered the following characters (maybe the newline) as your password, which was obviously wrong. Correct way (always)-
One command at a time > let it finish > next command.
I'll modify my original post to avoid the confusion..
Originally Posted by bagelong
Anyway, I think the moral to the story is to be patient, and let the process complete.