sudo usermod -G vboxsf -a [yourusername]
sudo usermod -G vboxsf -a $USER
/*
1.Install Guest Additions
2.Add Shared Folder to VM configuration
3.Add user to the vboxsf group with command ‘sudo usermod -G vboxsf -a [yourusername]’
4.Reboot (or log out and back in) to have access.*/