System restore is a good facility providing by Windows operating System. As you know it creates restorable point with your important system files.
Suppose if in any case if you want to read and work with the file in System resore, what will you do..? No option, you can’t read it directly through Windows.
Just select the Restore point and click on mount. Windows explorer opens with the files of Restore Point. Copy the file which you want to work to another place. Close the Explorer window. Then click on Unmount. Thats it.