For example, you may want to extend C drive in Windows 7 with unallocated space or free space on the system hard drive. Deleting useless files or uninstalling programs fix this trouble temporarily yet the same situation comes in the near future.Īnother motivation for this behavior could be making full use of hard drive space. Have you got such trouble on your Windows 7? Apparently, to extend Windows 7 boot partition mostly is to give sufficient space for the operating system as well as installed applications. It is like a threat that pushes me to delete files to free up disk space, or it will damage my system so that I cannot use it any more. “It is quite annoying when getting low disk space warning while working with my computer. Why do you want to extend Windows 7 system partition?