i386 / amd64 install to sd0 - amd64 fails

[Cem Kayali <cemkayali%eticaret.com.tr@localhost>]

Hello!

I tried to install NetBSD 4.0 to usb memory, sd0... While i386 
installation cd shows there are 2 disks and installation is successfull, 
amd64 shows there is only wd0.

Is there anyway that i can install amd64 to usb memory? - assuming there 
is no OS on wd0 (if there was NetBSD on wd0, i would set install path to 
mount point of /dev/sd0a).


Regards,
Cem