Peter:

I'm having the same problem you are [1].  It's been over a month 
since I've been able to get -current for the alpha to build.

When I read Luke's reply to your posting it occurred to me that, 
since I don't need floppies to install NetBSD, it might be easier to 
tell build.sh floppies are bigger than they really are instead of 
removing some drivers from the kernel.  Accordingly, without really 
knowing what I was doing, I made these changes:

In /usr/src/distrib/alpha/floppy-GENERIC/Makefile

inserted this line

FLOPPYSIZE=    11520

after

FLOPPYMAX?=     1


In /usr/src/distrib/alpha/instkernel/cd-hd-tape/Makefile

changed

FLOPPYSIZE=     5760

to

FLOPPYSIZE=     11520


In /usr/src/distrib/alpha/instkernel/fdset/Makefile

changed
FLOPPYSIZE=     2880

to

FLOPPYSIZE=     11520


It seemed to work, at least the release was built, but I haven't 
installed the binaries on a machine yet.


Ray


[1]  http://mail-index.NetBSD.org/current-users/2004/05/02/0004.html