boot block

基本解释

If the system has a boot block to restore the original BIOS, use it. Refer to your motherboard documentation.
如果系统有可恢复原先的BIOS的启动块，请使用它。参考您的主板文档。
Boot devices take advantage of the block Virtualization Service Client (VSC) to provide enhanced performance.
启动设备利用块级的虚拟服务客户端，以提供增强的性能。
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This command is useful for building an initial root file system for boot configuration that allows preloading of block devices needed to access the real root file system.
这个命令可以用来构建初始的根文件系统，它可以用来引导允许提前加载访问真正根文件系统所需要的块设备的配置。