本文档详细介绍如何通过虚拟机设置LFS（Linux From Scratch）系统。主要内容包括：配置虚拟机至少需要3GB存储空间和256M内存，设置启动顺序为CD-ROM优先；使用SSH进行网络设置获取动态IP，并启动SSH服务；创建交换分区和LFS分区，建立文件系统并挂载。
[b][size=medium]setup machine(only for vm)[/size][/b]
[b][size=small]1. create vm machine[/size][/b]
[list]
[*]at least, 3 gigabytes is necessary for vm if you are in first trip to lfs
[*]256M mem is enough if the vm is installed on sda; otherwise, 512M is better[/list]
[b][size=small]2. boot order[/size][/b]
set cd-rom driver to first order on boot list
3. reboot vm
[b][size=medium]option[/size][/b]
use ssh to accomplish command issuing:
[b][size=small]1. net-setup[/size][/b]
by default, press Enter two times to acquire dynamic ip through dhcp
[b][size=small]2. start sshd[/size][/b]
/etc/rc.d/init.d/sshd start
passwd to set root password for sshd
[b][size=medium]new partition[/size][/b]
[b][size=small]1. create partition[/size][/b]
by default, login as root user to run cfdisk to launch graphical interactive operation; new two partitions, one for swap and another for lfs building.
[b][size=small]2. create file system[/size][/b]
assume /dev/sda1 is first partition and /dev/sda2 is second one.
issues these commands to create file system on the partition:
[b][size=small]3. mount the partition[/size][/b]
[b][size=small]1. create vm machine[/size][/b]
[list]
[*]at least, 3 gigabytes is necessary for vm if you are in first trip to lfs
[*]256M mem is enough if the vm is installed on sda; otherwise, 512M is better[/list]
[b][size=small]2. boot order[/size][/b]
set cd-rom driver to first order on boot list
3. reboot vm
[b][size=medium]option[/size][/b]
use ssh to accomplish command issuing:
[b][size=small]1. net-setup[/size][/b]
by default, press Enter two times to acquire dynamic ip through dhcp
[b][size=small]2. start sshd[/size][/b]
/etc/rc.d/init.d/sshd start
passwd to set root password for sshd
[b][size=medium]new partition[/size][/b]
[b][size=small]1. create partition[/size][/b]
by default, login as root user to run cfdisk to launch graphical interactive operation; new two partitions, one for swap and another for lfs building.
[b][size=small]2. create file system[/size][/b]
assume /dev/sda1 is first partition and /dev/sda2 is second one.
issues these commands to create file system on the partition:
mke2fs -jv /dev/sda2
mkswap /dev/sda1
swapon /dev/sda1
[b][size=small]3. mount the partition[/size][/b]
export LFS=/mnt/lfs
mkdir -pv $LFS
mount -v -t ext3 /dev/sda2 $LFS
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