Not meant to be graphical, so business as usual 😉

Get the right device first (e.g. hot swap)

# fdisk -l | grep '^Disk'

In this case, we check on /dev/sdd to create a new partition:

# fdisk /dev/sdd

Basic commands from the menu needed:

    * m - print help
    * p - print the partition table
    * n - create a new partition
    * d - delete a partition
    * q - quit without saving changes
    * w - write the new partition table and exit

After having added a new partition, you will need to format it to you preferred, in this case ext3

# mkfs.ext3 /dev/sdd1

Then create a new mount point e.g. /data/stuff and mount the formatted partition over there.

# mkdir /data/stuff
# mount /dev/sdd1 /data/stuff

Those mounts remain on the system til you reboot it. To add this by default, edit /etc/fstab

# vim /etc/fstab

and add the following line:

/dev/sdd1       /data/stuff     ext3    defaults        0       2