http://www.jianshu.com/p/bb1bd67c7395
http://www.jianshu.com/p/3a752b9b6908
这两篇文章中，我们用光盘引导启动，然后在安装菜单上：
- 按
ESC - 输入
linux ks=ftp://192.168.0.113/pub/centOS6.cfg
实现自动安装。
其实我们也可以自己制作一个iso文件去引导启动，只要在电脑插上有这个iso文件的光盘，就能实现自动安装操作系统。
1、拷贝isolinux目录
我的光盘挂载在/misc/cd/目录下。
先把光盘/misc/cd/isolinux/这个目录的内容拷贝到/app/centos6
[root@CentOS6 ~]#mkdir /app/centos6
[root@CentOS6 ~]#cp -r /misc/cd/isolinux/ /app/centos6/
[root@CentOS6 ~]#tree /app/centos6/
/app/centos6/
└── isolinux
├── boot.cat
├── boot.msg
├── grub.conf
├── initrd.img
├── isolinux.bin
├── isolinux.cfg
├── memtest
├── splash.jpg
├── TRANS.TBL
├── vesamenu.c32
└── vmlinuz
2、编辑安装菜单
[root@CentOS6 isolinux]#vim isolinux.cfg
#prompt 1
timeout 600
display boot.msg
menu background splash.jpg
menu title Welcome to CentOS 6.8!
menu color border 0 #ffffffff #00000000
menu color sel 7 #ffffffff #ff000000
menu color title 0 #ffffffff #00000000
menu color tabmsg 0 #ffffffff #00000000
menu color unsel 0 #ffffffff #00000000
menu color hotsel 0 #ff000000 #ffffffff
menu color hotkey 7 #ffffffff #ff000000
menu color scrollbar 0 #ffffffff #00000000
label desktop <<----菜单选项
menu label ^Auto Desktop Install
kernel vmlinuz
append initrd=initrd.img ks=ftp://192.168.0.113/pub/centOS6.cfg
label mini <<----菜单选项
menu label Auto ^Mini Install
kernel vmlinuz
append initrd=initrd.img ks=ftp://192.168.0.113/pub/centOS6-2.cfg
label mini <<----菜单选项
menu label Manual ^Install
kernel vmlinuz
append initrd=initrd.img
label local <<----菜单选项
menu default <<默认选项，我放在这里，是避免误安装。当误操作放入光盘时，系统在本地找不到安装文件，就不会自动安装。
menu label Boot from ^local drive
localboot 0xffff
3、打包iso
接下来，我们就把/app/centos6这个目录打包刻录成iso文件。
[root@CentOS6 isolinux]#mkisofs -R -J -T -v --no-emul-boot --boot-load-size 4 --boot-info-table -V "CentOS 6.9x86_64 boot" -b isolinux/isolinux.bin -c isolinux/boot.cat -o /root/boot.iso /app/centos6
I: -input-charset not specified, using utf-8 (detected in locale settings)
genisoimage 1.1.9 (Linux)
Scanning /app/centos6
Scanning /app/centos6/isolinux
Excluded: /app/centos6/isolinux/TRANS.TBL
Excluded by match: /app/centos6/isolinux/boot.cat
Writing: Initial Padblock Start Block 0
Done with: Initial Padblock Block(s) 16
Writing: Primary Volume Descriptor Start Block 16
Done with: Primary Volume Descriptor Block(s) 1
Writing: Eltorito Volume Descriptor Start Block 17
Size of boot image is 4 sectors -> No emulation
Done with: Eltorito Volume Descriptor Block(s) 1
Writing: Joliet Volume Descriptor Start Block 18
Done with: Joliet Volume Descriptor Block(s) 1
Writing: End Volume Descriptor Start Block 19
Done with: End Volume Descriptor Block(s) 1
Writing: Version block Start Block 20
Done with: Version block Block(s) 1
Writing: Path table Start Block 21
Done with: Path table Block(s) 4
Writing: Joliet path table Start Block 25
Done with: Joliet path table Block(s) 4
Writing: Directory tree Start Block 29
Done with: Directory tree Block(s) 2
Writing: Joliet directory tree Start Block 31
Done with: Joliet directory tree Block(s) 2
Writing: Directory tree cleanup Start Block 33
Done with: Directory tree cleanup Block(s) 0
Writing: Extension record Start Block 33
Done with: Extension record Block(s) 1
Writing: The File(s) Start Block 34
22.37% done, estimate finish Mon Jul 10 02:52:33 2017
44.66% done, estimate finish Mon Jul 10 02:52:33 2017
67.01% done, estimate finish Mon Jul 10 02:52:33 2017
89.33% done, estimate finish Mon Jul 10 02:52:33 2017
Total translation table size: 4483
Total rockridge attributes bytes: 1360
Total directory bytes: 2048
Path table size(bytes): 26
Done with: The File(s) Block(s) 22214
Writing: Ending Padblock Start Block 22248
Done with: Ending Padblock Block(s) 150
Max brk space used 0
22398 extents written (43 MB)
看一下打包好的iso文件
[root@CentOS6 isolinux]# cd ~
[root@CentOS6 ~]#ll boot.iso
-rw-r--r--. 1 root root 45871104 Jul 10 02:52 boot.iso
4、把boot.iso拷贝到windows上
[root@CentOS6 ~]#sz boot.iso
rz
Starting zmodem transfer. Press Ctrl+C to cancel.
Transferring boot.iso...
100% 44796 KB 14932 KB/sec 00:00:03 0 Errors
5、用boot.iso启动引导
图1，我在vmware软件上新建一个虚拟机，启动光盘就是boot.iso
图1
图2，启动虚拟机，进入一个选项菜单。这个菜单就是我们第二步配置的isolinux.cfg文件。选择第一项我们试一下
图2
图3，系统用eth0网卡获取ip。
图3
后面就是自动安装了
Paste_Image.png
Paste_Image.png
6、刻录到U盘
我们可以用dd命令刻录到一个空的U盘上面。我的U盘是/dev/sdb
Paste_Image.png
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