gpart 分割磁區

切 /dev/ada1 為例子

STEP 1. 先用gpart show查看目前的硬碟資訊

gpart show

STEP 2. 建立GPT Partition於ada1

gpart create -s GPT ada1

STEP 3. 查看gpart 狀態

gpart show

=>          63  976561551  ada0  MBR  (466G)
               63  976559157    1  freebsd  [active]  (466G)
  976559220       2394       - free -  (1.2M)
=>           0  976559157  ada0s1  BSD  (466G)
                0   50331648      2  freebsd-swap  (24G)
   50331648   33554432      1  freebsd-ufs  (16G)
   83886080   67108864      4  freebsd-ufs  (32G)
  150994944   67108864      5  freebsd-ufs  (32G)
  218103808   67108864      6  freebsd-ufs  (32G)
  285212672   67108864      7  freebsd-ufs  (32G)
  352321536  624237621      8  freebsd-ufs  (298G)
=>        34  4882808253  ada1  GPT  (2.3T)
             34  4882808253       - free -  (2.3T)

STEP 4. 於ada1上增加type為freebsd-ufs的partition

gpart add -b 34 -s 4882808253 -t freebsd-ufs ada1

其中，-b -s -t 是絕對必要參數 
 -b：start
 -s：size
 -t：fs_type

STEP 5.再執行gpart show可以看到該生出來的已經生出來

=>          63  976561551  da0  MBR  (466G)
               63  976559157    1  freebsd  [active]  (466G)
  976559220       2394       - free -  (1.2M)
=>           0  976559157  ada0s1  BSD  (466G)
                0   50331648      2  freebsd-swap  (24G)
   50331648   33554432      1  freebsd-ufs  (16G)
   83886080   67108864      4  freebsd-ufs  (32G)
  150994944   67108864      5  freebsd-ufs  (32G)
  218103808   67108864      6  freebsd-ufs  (32G)
  285212672   67108864      7  freebsd-ufs  (32G)
  352321536  624237621      8  freebsd-ufs  (298G)
=>        34  4882808253  ada1  GPT  (2.3T)
             34  4882808253    1  freebsd-ufs  (2.3T)
=>        34  4882808253  ufsid/4cecc4f9c9eaaa33  GPT  (2.3T)
             34  4882808253                       1  freebsd-ufs  (2.3T)

STEP 6.執行newfs

newfs -O2 -U /dev/ada1p1

Step 7.執行mount測試

mount /dev/ada1p1 /mnt