First of all we need to create a folder where mount the file.let we mount in /mnt folder.then create some folder C,D ,E as necessary (check all hard disk partition by fdisk -l) in mnt.then go to /etc/Fstab. write like this
/dev/sda1 /mnt/C vfat defaults 0 0
as necessary.and reboot.then see it auto mount the directory.
