It's simple !
First of all, you have to create a mount point. A suitable place already is given: inside root, there is a directory named mnt. Inside mnt, you can create am empty directory where the HDD FAT/FAT32 partition will be mapped.
Create a mount point:
sudo mkdir /mnt/F
Now the next task is to find out the partition that we want to be mounted.
See the HDD partitions:
sudo fdisk -l
After this command, you'll see a list of partitions (both physical and logical). select the desired one for mounting. For example, you want to mount /dev/sda9 . So the command is:
sudo mount /dev/sda9 /mnt/FBut if the partition is of NTFS type; then use this command instead:
sudo mount /dev/sda9 /mnt/F -t ntfs -o nls=utf8,umask=0222Done! now browse to /mnt/F and you'll get the HDD contents.