How to create a 2nd HDD UFS partition on FreeBSD

-- Create Partition --

# gpart create -s gpt da0
  da0 created

# gpart show da0
  =>       63  312579603  da0  GPT  (149G)
  63  312579603       - free -  (149G)

# gpart add -t freebsd da0
  da0p1 added

(take note of the output "da0s1")

# newfs /dev/da0s1

-- /etc/fstab --

# nano /etc/fstab
(mkdir newdir)
/dev/da0p1 /newdir ufs rw 2 2

-- Delete / Destroy Partition --

# gpart delete -i 1 da0p1

Destroy "slices" (repeat as needed),

# gpart destroy da0p1

Delete the GEOM label,

# gpart delete -i 1 da0

Destroy the GEOM label,

# gpart destroy da0

On every step, verify the partition table :

# gpart show da0

and

# gpart list