Delete volume to produce unallocated space and extend volume with the unallocated space.Here are some cases that you may see which you fit in How may we extend volume c or any other volume in Windows 10? This page introduces most safe ways to extend volume without losing data using Extend volume under disk management, diskpart cmd, free partition resizer to do the job. Extend volume is a Windows disk management function that is provided in Windows 11/10/8/7 and other systems for users to expand volume size, however when it comes to the c system boot volume, extend volume is disabled by Windows 10.
