I've seen many posts on how to fix squeaky floors, but think I have a
problem that hasn't been covered yet. I have a squeak that is under
linolium. In the basement, not only is the ceiling finished with
drywall, but the squeak is directly above the duct work! And it isn't
close the the edge, it is directly in the middle of the duct work. I
think my only option is to repair from the top, but how can I
accomplish this without ruining the linolium?

Thanks in advance!