I've installed Ubuntu 10.04 as a Virtualbox VM. I'd like to make my entire C drive an always-enabled shared folder under ~ (/home/). I've seen this tutorial but I'm unsure of the differences between the commands they give. After creating a new virtual folder called "C" under Virtualbox Settings -> Shared folders, I tried, inside
mkdir C sudo mount -t vboxsf share ~/C
but I get
/sbin/mount.vboxsf: mounting failed with the error: Protocol error
What is the correct command to achieve what I want to do?