> Hello,
> 
> The first machine is 'riscpc', 
> a RISCPC arm32 under NetBSD 1.4.1.
> The cdrom is mounted on /mnt/cdrom.
> The floppy driver is mounted on /mnt/diska
> The riscos partition is mounted on /mnt/disk4
> This machine is NFS client and server.
> The / and /usr file system are server.
> The /etc/exports file is:
> / -maproot=0 contura
> /usr -maproot=0 contura
> 
> The second machine is 'contura', 
> a Compaq contura aero4/33C (i386) under
> NetBSD 1.4.1 too.
> This machine is NFS client and server.
> The /usr and / file system are server,
> The riscpc file system are access via nfs. 
> they are mounted on /mnt/riscpc/usr
> and on /mnt/riscpc.
> The /etc/exports file is:
> / -maproot=0 riscpc
> /usr -maproot=0 riscpc
> 
> The problem is that I can't see the files 
> on the cdrom, the floppy, and the riscos 
> partition.
> 

Correct, because you haven't exported them.  To be able to see the file 
system on a remote machine it must be listed in the exports file on the 
machine which has the real file system.

Richard.