gpart show da1(可以先用ls  /dev查看)

# gpart show da1
=> 1 30719999 da1 MBR (15G)
1 1600 1 efi (800K)
1601 1904464 2 freebsd [active] (930M)
1906065 28813935 - free - (14G)

# gpart add -t freebsd da1(將剩下的分割為freebsd MBR)
da1s3 added

# gpart show da1 (顯示da1分割)
=> 1 30719999 da1 MBR (15G)
1 1600 1 efi (800K)
1601 1904464 2 freebsd [active] (930M)
1906065 28813935 3 freebsd (14G)

# newfs -U /dev/da1s3 (格式化da1s3)
/dev/da1s3: 14069.3MB (28813928 sectors) block size 32768, fragment size 4096
using 23 cylinder groups of 626.09MB, 20035 blks, 80256 inodes.
with soft updates
super-block backups (for fsck_ffs -b #) at:
192, 1282432, 2564672, 3846912, 5129152, 6411392, 7693632, 8975872, 10258112,
11540352, 12822592, 14104832, 15387072, 16669312, 17951552, 19233792,
20516032, 21798272, 23080512, 24362752, 25644992, 26927232, 28209472

#mount /dev/da0s3 /mnt