If you're adding a partition with an existing file structure that you don't want to delete, skip steps 1 and 2 as the partitions will already be created. If you're mounting a partition to replace your encrypted home directory, then see the Sources tab for the Help Ubuntu link where you can find a section on how to re-encrypt your home directory files.
- Ex:
sudo fdisk /dev/sdb
(creates sdb1)
- Ex:
sudo mkfs-ext4 /dev/sbd1