Hello!

  MB> I think you should threat is as mounted, but not
    > mounting it by hand.  Sysinst will mount it for you
    > just before looking for the sets
    >
    > I know, it's not very intuitive :)

  SB> I see...
    >
    > No, it's not very intuitive. It's also not documented,
    > and something like that should be.

I'm actually in the middle of my install to a second hard
disk.  I had to choose 'unmounted filesystem' as my source
media, enter wd0e as device it's on, and /NETBSD, which is
the directory containing the binary sets.  The installer
mounted them as /mnt2, but I only know that because pax told
me.

I'll go check, it may have finished unpacking now...

Regards,
  - Andy.