清理磁盘后Xcode出现 Unable to boot devi

今天清理磁盘后，在Xcode 模拟器运行提示 Unable to boot device because it cannot be located on disk.

记录下笔记

问题描述：本是弹框，忘记截图，就把描述信息贴出来

Unable to boot device because it cannot be located on disk.

Use the device manager in Xcode or the simctl command line tool to either delete 
the device properly or erase contents and settings.

解决办法：

直接在控制台运行以下指令，即可解决。

$ xcrun simctl erase all

完！