I was fighting nearly the same issue last night. I was using a slightly older version of parallels (Build 7.0.15107 (Revision 796624; September 3, 2012)) and hit the same failure. I was able to make some progress by changing where the cd was mounted. I used the first sata port (SATA 0:1) and got past the "PBR...EI" message. I don't know if it matters, but I chose the OS "other/other."
I now have a series of messages about "trying sdC0...dosinit: can't open #S/sdC0/9fat"
Where the "sdC0" strings vary with values like sdE0 through sdE5.
and I'm finally left at a "Boot from: " prompt. Time to look at more of the plan 9 docs to get a clue.
Last edited: Jul 31, 2013