nfs mount on a mac

Slightly different (of course it is a Mac) to Ubuntu

Show Mounts

showmount -e <server>

This should list the exports from the NFS Server.

Make a Mount Point

mkdir /dir1/mount_point_locally

Mount The drive

mount -o rw -t nfs -o resvport drive4/

You may want to try without the -o resvport (which is the Ubuntu way - but it did not work for me).