如果已有默认配置，并在系统中刚加入新内核，只要在GRUB2配置文件中检测并添加新内核就行了。
If you've got a default configuration but you've just added a new kernel to your system, this might be enough to detect the new kernel and add it to your GRUB 2 configuration file.
如果已有默认配置，并在系统中刚加入新内核，只要在GRUB2配置文件中检测并添加新内核就行了。
If you've got a default configuration but you've just added a new kernel to your system, this might be enough to detect the new kernel and add it to your GRUB 2 configuration file.
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