If C drive is running out of space, issues such as app slow to respond, Windows update failure may occur. Windows 10/11 System partition (C drive) is an essential partition. Question from Why extend system partition on Windows 10/11?
But “Extend Volume” is disabled, how can I extend my system partition in Windows 10?” There are two partitions: C and D on the hard drive. “Need to increase Windows 10 system partition.
