手册：IA64/安装/配置系统引导程序Bootloader

IA64 Handbook
安装
关于安装
选择安装媒介
配置网络
准备磁盘
安装stage3
安装基本系统
配置Linux内核
配置系统
安装系统工具
配置系统引导程序Bootloader
收尾安装工作
使用Gentoo
Portage介绍
USE标记
Portage功能特性
初始化脚本（Initscript）系统
环境变量
使用Portage
文件和目录
变量
混合使用不同的软件分支
额外的工具
定制Portage树
高级特性
网络配置
入门
高级配置
模块化网络
无线
添加功能
动态管理

Installing elilo

On the IA64 platform, the boot loader is called elilo. First install the software on the system:

root #emerge --ask sys-boot/elilo

Its configuration file is called /etc/elilo.conf and a sample file is installed in the typical docs directory (/usr/share/doc/elilo-<version>/). Here is another sample configuration:

FILE /etc/elilo.confExample elilo configuration

boot=/dev/sda1
delay=30
timeout=50
default=Gentoo
append="console=ttyS0,9600"
prompt
  
image=/vmlinuz
	label=Gentoo
	root=/dev/sda3
	read-only
  
image=/vmlinuz.old
	label=Gentoo.old
	root=/dev/sda3
	read-only

The boot line tells elilo the location of the boot partition (in this case, /dev/sda1). The delay line sets the number of 10th of seconds before automatically booting the default when in non-interactive mode. The timeout line is just like the delay line but for interactive mode. The default line sets the default kernel entry (which is defined below). The append line adds extra options to the kernel command line. The prompt sets the default elilo behavior to interactive.

The sections that start with image define different bootable images. Each image has a nice label, a root filesystem, and will only mount the root filesystem read-only.

If, while building the Linux kernel, an initramfs was also configured to boot from, then it is necessary to change the configuration by referring to this initramfs file and telling the initramfs where the root device is at:

FILE /etc/elilo.confUpdated configuration to reflect use of initramfs

image=/vmlinuz
	label=Gentoo
	initrd=/initramfs-genkernel-ia64-3.16.5-gentoo
	append="initrd=initramfs-genkernel-ia64-3.16.5-gentoo root=/dev/sda3 console=ttyS0,9600"
	read-only

When the configuration is done, run elilo --efiboot. The --efiboot option adds a menu entry for Gentoo Linux to the EFI Boot Manager:

root #elilo --efiboot

重启系统

退出chroot环境并unmount全部已持载分区。然后敲入一条有魔力的命令来初始化最终的、真实的测试：reboot。

root #exit

cdimage ~#cd

cdimage ~#umount -l /mnt/gentoo/dev{/shm,/pts,}

cdimage ~#umount -R /mnt/gentoo

cdimage ~#reboot

当然，别忘了移除可引导CD，否则可能再次从CD启动，而不是新的Gentoo系统。

当重启进全新安装的Gentoo环境，继续完成结束Gentoo安装。

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