Here is one of the posts found on related forums. Computer will slow down and reduce performance if C drive where operating system is installed is running out of free space. How to increase C drive space in Windows 10/8/7? This is one of the most frequently asked questions when you browse technical forums or communities. Method #4: How to increase C drive space by adding unallocated space?.Method #3: Increate system partition size using diskpart command.Method #2: How to extend C drive with free disk partition software?.Method #1: Increase C drive space in Disk Management.How to increase C drive free space in Windows 10/8/7?.
