解决此问题的一个简单方法是在机器的BIOS中禁止通过CD和软盘进行引导，并确保为BIOS设置了一个口令，使得其他人不能修改这些设置。
A simple way to get around this problem is to disable booting from CD and floppy in your machine's BIOS and make sure your BIOS is set with a password so others can not change these Settings.
password选项指定了使用MD 5加密的口令，用于访问GRUB的交互式引导选项。
The password option specifies the MD5-encrypted password used to gain access to GRUB's interactive boot options.
就是说在狗儿把行为和口令联系起来之前，人们经常会给训练命名，或使用口令尝试引导狗做出某个动作。
When it comes to commands this means people often name an exercise or use a command to try and induce a behavior before the dog knows the behavior well enough to associate a behavior with a command.
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