I am based on the ubuntu11.10 version, and when the system is properly installed, follow these steps:
Introduction of how to install the enhanced features
1, choose the installation of Enhanced packaging package: The name of the package is generally: vboxguestadditions.iso;
Can be found under the VirtualBox installation directory.
2, the implementation: cd/media/vboxadditions_4.1.8_75467
sudo./vboxlinuxadditions.run
3, after the implementation of the installation command will see the following information:
This means that the installation has been successful, restart the system can be, sudo reboot
Second, how to share folders
1, click on "Equipment"--"allocation of data Space": Will pop up a data Space setting window, select "Add Data Space" here, then choose "Other" in "Data Space location", select the folder that you want to share under the host, here take share as an example, remember to select "Fixed allocation" this option. Click OK to do it;
2, re-enter the virtual Ubuntu, at the command line terminal input:
sudo mkdir/mnt/sharing creates a new mount point;
sudo mount-t vboxsf share/mnt/sharing mount
Execute under LS to see if there is a mount success.
Uninstall: sudo umount-f/mnt/sharing
3, if you do not want to be mounted after each boot, you can set up for automatic mount, if you have selected "auto-mount" option, you can see the/media/directory under the name Sf_name, for example, the shared folder name is share, then see Sf_share.