mount drive in VirtualBox linux

prerequisites

Assume local Shared Folder: sfolder; VM mount: /home/<user>/vfolder

Insert Guest Additions CD Image
sudo apt-get install virtualbox-guest-dkms
sudo apt-get install virtualbox-guest-utils

cd /opt/VBoxGuestAdditions-*/init  

sudo ./vboxadd setup

touch ~/vfolder
chmod 777 ~/vfolder

sudo vim /etc/modules 
=>
vboxsf

mount the local Shared Folder

sudo vim /etc/fstab 
=>
sfolder /home/<user>/vfolder vboxsf defaults 0 0

mount the network Windows Shared Folder

cifs

//[localip]/[folder] /mnt/[localfolder] cifs credentials=/XXXX/.credentials,vers=3.0,iocharset=utf8,file_mode=0777,dir_mode=0777,uid=[USERNAME],gid=[USERNAME],nofail,sec=ntlmssp       0       0