笨方法(沒試過,請小心):
1.確認mv不在/usr/bin及/usr/sbin,否則copy "mv" 至/bin(暫時)
2.mkdir /home/usr-old
3.cp /usr/* /home/usr-old
4.fdisk /dev/sda 將/dev/sda4重新分割成兩個partition(假設/dev/sda4及/dev/sda5)...(不知道是否要先umount /dev/sda4)
5.mount /dev/sda4 /usr
6.cp /home/usr-old/* /usr
7.修改/etc/fstab
我是linnnn