gillhaa@ghost.whirlpool.com said:
> Normally via Makefiles under /usr/src/distrib/i386/floppies.  You can
> easily modify it to build your own custom floppy.  Or just put a
> custom kernel in /usr/src/sys/arch/i386/compile/INSTALL/netbsd and
> just do a 'make' in /usr/src/distrib/i386/floppies/fdset. 

simpler: you can do eg
make KERN=/sys/arch/i386/compile/MYKERNEL/netbsd
in distrib/i386/floppies/{fdset,bootfloppy*}

best regards
Matthias