On any computer where there is an operating system, there is a system drive. All operating system files are stored on it. Here are the elements of the desktop, users' files. All programs are set by default, too, in one of the folders located on the system drive, which is called Program Files. To view the structure of the system drive, you can use the program Disk Usage Analyzer, which performs analysis of the hard drive and visualize the structure of the location of all files and folders, as well as their size. Video, located below, illustrates how to work with this program.
When partitioning your hard drive partitions so many users are allocated to the system disk is not too much space. Consequently, it is typical that with the time on the system disk space is quite small, and the computer starts to fail and slowly work. In the event of such a situation has to clean the system disk by deleting unnecessary temporary files and transferring some files and folders on the other hand, not a disk or external media. Note that delete or move any files to the system disk should be with great caution, because the removal of even a single file system may lead to the fact that the system will not boot.
Some advanced users in order to free up space on the system drive transfer some folders to another drive, for example, folders such as My Documents and Program Files. As far as is reasonable to transfer the Program Files folder to the system drive to another drive - a moot point. Many experts believe that it is impractical to do for many reasons, mainly because it is impossible to completely correct to make the transfer of this folder to another partition. In addition, a high security risk because an entry in the Program Files folder can be performed only by administrators, and the entry in the folder of the system drive is located, as a rule, can execute and users without administrator rights. So malware can easily make their own changes to the program files and the user will not even know about it. For all these reasons, in order to save space on the system disk, better take the recommendation to install some software, such as games that take up a lot of space, just on the other, is not a system disk.