How to mount a Pen Drive to a Virtual Box using commands

• First run the ISO image which you want to install the pen drive, using Virtual Box. 
• Then plug the Pen Drive to you Personal Computer.
• In that Window, go to the "Devices" tab then go to the "USB" tab and then select your Pen Drive from the list.

Then, in the Terminal type following commands as it is..

In here, "sdd1" is my pen drives name. It is changing every time you are trying to mount your pen. 

then make a directory inside "media" directory call "usbstick"

then type following command.., 

*Make sure that your pen format is "FAT32"

Now you pen driver has been mounted.. :)