Win7 extended C disk partition problem

When installing Win7, the C drive is allocated 25GB of space, after installing some applications, C drive space is not much, and programs like VS2008 can only be installed in the main What should I do under the root directory (that is, the C drive)? I analyzed the C drive, the Windows directory takes up about 10G, the application only accounts for about 6G, and I still lose the software industry. I can't make room for VS2008. Obviously, uninstalling the program and deleting the intermediate files can't be solved. problem. The following are the results of my exploration.

1. Completed by third-party software. Download an Acronis Disk Director Suite 10 software for partitioning. More online pictures, refer to the article: http://ce.sysu.edu.cn/hope/Education/ShowArticle.ASP?ArticleID=7403. But need to pay attention to two problems, (1) do not need to use the Chinese version, because of the lack of components, when submitting the partition results, the computer restarts again, and finally found that the sub-book did not expand the C drive capacity, the partition failed. (2) When selecting the mode, please select manual. If you notice these two problems, follow the above article and the partition is successful.

2. Refuting Win7's own partition system can expand C capacity. Many articles on the Internet have a lot to say: Right click on "Computer", "Manage", "Disk Management". Right click on the D drive, compress the volume, divide the 10GB space, then right click on the C drive, expand the volume, and expand the 10GB space into it. In fact, the right-hand compressed volume of the D drive becomes gray (not available), and the C drive extended volume becomes gray or unavailable. This aspect is feasible and practically impossible.

3.PM can achieve partitioning under WIN7? I have not tried it, the information collected on the Internet: PM7.0 can not be partitioned under Win7, PM10.0 can achieve partitioning.

4. Preventive methods: (1) The general application does not need to be installed under the C drive, but some application installation paths are not optional, such as VS2008; (2) clean up some intermediate files of the system, such as cache page , empty the recycle bin, etc.; (3) clear some backup files, this method is not desirable.