Try to make this document reflect reality better:

Try to make this document reflect reality better:

o All of the Q&A entries in this section were i386-specific, so make
these conditional on building for that platform.  If
non-i386-platforms need similar Q&A lists, they can add their own to
this file.

o Coalesce the two Q&A sections into one.

o Correct some device names (wd(4) devices have not existed for quite
some time).

o Get rid of a number of obsolete entries (suggested by jhb).