submirror
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例句
You must also record the path to the alternate boot device, so the system can boot if the submirror fails.
您还必须记录到备选根设备的路径,这样如果子镜像失败了,系统仍然可以启动。
After the reboot, you need to issue the command in Listing 7, which attaches the second submirror to the system.
重新启动以后,您需要发出清单7中的命令,将第二个子镜像附加到系统中。