Mac Os X – host and Ubuntu – guest in VirtualBox. Shared folder problem.

I spent more then hour to solve this so I’ll post the solution.

Problem: on mounting shared folder named “common” in Ubuntu as guest OS over Mac Os X as host OS

 sudo mount -t vboxsf common /media/common

I got the error:

/sbin/mount.vboxsf: mounting failed with the error: Invalid argument

Solution:
quote folders’ names!

 sudo mount -t vboxsf "common" "/media/common"