any ideas on subject? it seems that only Virtualbox manager do rihtfully connect of shared folders but that is not the case for commandline vm launch in linux.
I am not sure but you should be able to edit /etc/fstab to automount the shared folders. For example if you have a folder named Shared.
If you add the following line to your /etc/fstab of the guest machine:
Shared /media/Shared vboxsf defaults 0 0
this should do what you want.