NOTE:
i used in the following examples my own device names such as "/dev/sda3" and "/dev/sda4", But you should use your own values. To know your device names or IDs : open the terminal and type this command:
sudo blkid Also i used the mount point as "/media/c" and "/media/d", But you can change them to any path you like.
STEP1: Open your Terminal and edit the "fstab" file:
sudo gedit /etc/fstab
STEP2: Add this line at the end of the file:
For a "FAT" partition:
/dev/sda3 /media/c vfat defaults,user,exec,uid=1000,gid=100,umask=000 0 0
For a "NTFS" partition:
/dev/sda4 /media/d ntfs-3g defaults,locale=en_US.utf8 0 0
STEP3: Finally save/exit the fstab file and restart your PC
For more info consider visiting the Ubuntu Documentation
Blessings.
