第 17 章 -《Linux 一学就会》- Linux 计划任务与日志的管理
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Boot Loader 就是在操作系统内核运行之前运行的一段主引导程序。grub 是其中一种的主引导程
序的名称。如果是微软的话 boot loader 就叫 ntldr 或 Bootmgr,centos6 的话 boot loader 叫
grub,centos7 的话 boot loader 叫 grub2
MBR 的硬盘的 0 柱面、0 磁头、1 扇区称为主引导扇区(也叫主引导记录 MBR)。它由三个部分组
成,主引导程序、硬盘分区表 DPT(Disk Partition table)和硬盘有效标志(55AA)。
为什么 MBR 分区表,只能分 4 个主分区?
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