引导加载程序之争:了解 LILO 和 GRUB PCV

从普通的桌面用户到 Linux? 系统管理员,大部分 Linux 用户都使用过一种名为引导加载程序的工具。此类工具的不同变种会提供不同层次的支持和功能。在很多情况下,Linux 发行版默认安装的引导加载程序并不总是适合需要;每个引导加载程序的默认设置也是如此。在本文中,Laurence Bonney 讨论了两个流行的引导加载程序 —— LILO 和 GRUB —— 的优点和缺点,并建议了很多配置,以充分发掘机器的潜力。

1评论:

Laurence Bonney ([email protected]),
WebSphere MQ JMS Test Team Lead, IBM

2005 年 9 月 20 日

  • 内容

在 IBM Bluemix 云平台上开发并部署您的下一个应用。

开始您的试用

在不考虑他们的工作或专业情况下,所有 Linux 用户都会使用的是哪个工具?引导加载程序。通过本文了解引导加载程序的工作原理,认识两个流行的引导加载程序 LILO(LInux LOader)和 GNU GRUB(GRand Unified Boot loader), 并研究两者各自的优点和缺点。

什么是引导加载程序?

最简单地讲,引导加载程序(boot loader) 会引导操作系统。当机器引导它的操作系统时,BIOS 会读取引导介质上最前面的 512 字节(即人们所知的主引导记录(master boot record,MBR))。在单一的 MBR 中只能存储一个操作系统的引导记录,所以当需要多个操作系统时就会出现问题。所以需要更灵活的引导加载程序。

主引导记录本身要包含两类内容 —— 部分(或全部)引导加载程序以及分区表(其中包含有关于介质其余部分如何划分为分区的信息)。当 BIOS 引导时,它会寻找硬盘驱动器第一个扇区(MBR)中存储的数据;BIOS 使用存储在 MBR 中的数据激活引导加载程序。

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时间: 2024-10-11 13:32:41

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