工具/原料：Tools/Materials:
- CentOs 7安装盘 CentOs 7 installation disk
- 软碟通，英文名UltraISO
- 8G优盘一个 8Gb USB flash dirve
方法和步骤：
1, 下载centos安装盘。百度搜索centos，第一条结果就是centos官网。这个不是重点，所以就简介吧！建议使用CentOS-7.0-1406-x86_64-DVD.iso。文件小，下载快，可以在使用过程中根据需求自己添加新功能。
1,Download centos installation disk. The first result of baidu search centos is centos website. This is not the point, so just a brief introduction! CentOS-7.0-1406-x86_64-DVD. Iso is recommended. The file is small, the download is fast, and you can add new features to your needs in the process.
2, 打开软碟通（ultraISO），选择打开镜像文件。刻录过程如下，
2, Open the ultralISO and choose to open mirror image file. The burning process is as follows:
-
- 百度搜索软碟通，下载并安装（和常规软件安装步骤一样，此软件是收费的，不过我们可以免费试用）
- Baidu search ultraISO, download and install (Same as regular software installation steps, this software is charged, but we can try it for free )
- 试用软碟通打开下载好的CentOS 7 的镜像安装文件， 并选择好你要写入的U盘（U盘中其他的内容要记得备份，镜像文件写入的过程中会造成U盘中原文件丢失）
- Use ultraISO open the download a mirror image of CentOs 7 installation file, and choose the US disk which you want to write into. (The original fiel of USB drive you need to backup,since the file will be lost by this execute proccess )
- 点击制作，一般需要20分钟左右，因电脑而异。
- Click to make, it usually takes about 20 minutes, depending on the computer.
3, 压缩硬盘，为linux安装腾出空间。在“我的电脑（win8为这台电脑）”上右键，选择“管理”。在出来的计算机管理界面上点击“磁盘管理”，会出现所有的磁盘。
3, Compress the hard disk to make the space for Linux installation. Right-Click on my conputer(win 8 is my computer), choose management. Click on "disk management" on the computer management interface and all the disks will appear.
4, 选择你要压缩的盘，右键选择压缩。输入自己想要压缩的容量
4, Select the disk you want to compress, right-click compression. Enter capacity you want to compress.
5,准备好以上几个步骤你就可以开始安装了， 重启电脑之前，请注意。你要确信知道如何让你的电脑从优盘启动，不同的电脑不一样，可以根据自己的电脑品牌去搜索，这里不做详细介绍。做好准备之后就重启电脑吧！（一般是刚出现开机画面的时候按F12, 不过你要根据你自己电脑型号进行搜索具体的U盘启动的方法）
6,