Add an Additional Disk Drive to Your Linux Computer

First of all check if your Linux can see new device:

sudo fdisk -l

Command and Response Dialog of Adding a New IDE Drive:

As root perform the following: (as highlighted in bold)

[root]# fdisk /dev/hdb
Command (m for help): m     (Enter the letter "m" to get list of commands)
Command action
a   toggle a bootable flag
b   edit bsd disklabel
c   toggle the dos compatibility flag
d   delete a partition
l   list known partition types
m   print this menu
n   add a new partition
o   create a new empty DOS partition table
p   print the partition table
q   quit without saving changes
s   create a new empty Sun disklabel
t   change a partition's system id
u   change display/entry units
v   verify the partition table
w   write table to disk and exit
x   extra functionality (experts only)