Rebuild everything!!

在更新完source 及 port-tree後，會各有一個UPDATING檔可看
/usr/src/UPDATING以及/usr/ports/UPDATING
裡面都寫很多注意事及更新內容

cd /usr/src
make buildworld
make kernel KERNCONF=YOUR_KERNEL_HERE
##可取為GENERIC ,, make kernel KERNCONF=GENERIC

[1] If you have third party modules, such as vmware, you should disable them at this point so they don't crash your system on reboot.

然後開進單人模式
[3] From the bootblocks, boot -s, and then do
fsck -p
mount -u /
mount -a
cd src
adjkerntz -i # if CMOS is wall time

mergemaster -p [5]

make installworld

make delete-old

mergemaster [4]

在作mergemaster時，會比對新舊設定檔，要仔細注意這個步驟，以免舊有設定被覆蓋
若是想安裝新設定檔按 i，若是想保留原有設定按 d


然後重新開機，應該就OK了，可以用 uname -r 來檢查FreeBSD版本