MOUNT EXTERNAL USB STORAGE DEVICE

1] Finding the partition name of External device
a) In terminal, enter-
fdisk -l
It will list the all the partition no matter mounted or unmounted

In my case, by output  there is only one partition available named as /dev/sda

b) Now plug-in the External usb storage device.

c) In terminal enter-
fdisk -l

It will again list all the partition

In my case, it is listing one more partition named as /dev/sdb1

\dev\sdb1 is  the device name we are going to use in mounting

2] Mounting the partition
a) create a mount point (directory) where we can access the files of that external storage device
In terminal, enter-
mkdir /mnt/sdb1

b) Mount
In terminal, enter-
mount /dev/sdb1 /mnt/sdb1

Now we can access the files and directory from /mnt/sdb1

3] unmounting that partition
In terminal, enter-
umount /mnt/sdb1