1.运行：cmd

2.输入：DISKPART.exe搜索

3.DISKPART> san

4.DISKPART> san policy=onlineall

5.DISKPART>list disk

6.DISKPART> select disk 1

7.DISKPART>attributes disk clear readonly
8.DISKPART>online disk

来自: https://www.cnblogs.com/MikeSunny/p/4863181.html