====创建内存硬盘RAMDisk====
==打开Terminal终端==
$ diskutil erasevolume HFS+ 'RAM_Disk' `hdiutil attach -nomount ram://134217728` //创建64GB的内存盘
$ cd /Volumes/RAM_Disk //进入到RAM_Disk内存盘
$ sudo mkdir -p Caches/Chrome //创建Cache/Chrome文件夹
$ rm -rf /Users/rolex/Library/Caches/Google/Chrome/ //删除原有/Google文件夹
$ ln -s /Volumns/RAM_Disk/Caches/Google /Users/rolex/Library/Caches/Google/Chrome/ //创建文件夹链接