SDFS or SCSI SDCard sharing

I can’t seem to share my SDFS or SCSI usb devices on my pandaboard.
I can share the cd drive and the RAM Disc, but the “Share” option isn’t avaliable on the SD Cards.
Is this just not possible, or is there something I’ve missed somewhere.
I’ve managed to share my hard drive and CD on my RISC PC (OS 4.xx) without issues, so I can get data around – it’s just rather odd.

This was covered barely two weeks ago.
See here: https://www.riscosopen.org/forum/forums/5/topics/2515#posts-31864

Aggh, embarassing. I did search for it, but the embarassing thing is I remember reading that very thread!