NFS client in 'rescue shell' from install DVD?

[Ron Leach <ronleach@tesco.net>]

List, good morning,

I started and continuing with a separate thread about a boot problem 
but have a specific query about the rescue shell and NFS, which I 
thought worth having as a separate short topic.

It's a wheezy system, running under the rescue shell provided by the 
install DVD.  I wanted to copy some config files from the wheezy 
machine onto an archive area on an nfs system.  If I try to mount an 
nfs export from another machine, onto a mount point in the filesystem 
seen by the 'rescue shell' from the install DVD, the mount command 
fails, reporting

# mount 192.168.0.200:/srv /mnt/nfs/srv
mount.nfs no such device

Some notes:

There is an entry in fstab for this mount, so there was no need to 
provide all the parameters.

192.168.0.200:/srv is being exported, and is seen by other machines.

/mnt/nfs/srv exists in the rescue shell filesystem, and can be 'cd''d to.

Does the error message mean that there is no nfs client available in 
the rescue shell?

Is there any way round this?  There is an nfs client, somewhere in the 
filesystem that the rescue shell can see, for example, if there was a 
method to invoke it.

regards, Ron