Multiple centos. iso files are merged into one iso file.

Multiple centos. iso files are merged into one iso file.

I downloaded the centos6.5 CD image file, but there are two downloaded files:CentOS-6.5-x86_64-bin-DVD1.isoAndCentOS-6.5-x86_64-bin-DVD2.isoWhich one is the best choice for installation. So I want to merge these two files into an iso file, so I can use the merged file for installation.
The procedure is as follows:
Install the UltraISO software.
1. Use UltraISO to open the first other ISO file (I am here is the CentOS-6.5-x86_64-bin-DVD2.iso file), pull out all the content, put it in a temporary directory.
2.

1. Modify the. discinfo file. Each ISO file in this file has one. The fourth line is the CD disk number. For example, the fourth line in the second file is 2. Change it to 1.
   
2. Use UltraISO to open the first CD, click "operation"> "add file", add all the files in the temporary directory, and replace the original duplicate file with the new one;
3. Save it!

Reference http://blog.sina.com.cn/s/blog_416adf890100gcmg.html