windows系统升级后删除旧的系统包windows.old

 

https://support.microsoft.com/zh-cn/windows/%E5%88%A0%E9%99%A4%E4%BB%A5%E5%89%8D%E7%89%88%E6%9C%AC%E7%9A%84-windows-f8b26680-e083-c710-b757-7567d69dbb74