 This video is about increasing the size of Disk-C at the expense of Disk-D. Right-click on the Start menu and select Disk Management from the menu that appears. We can see the partition structure. Here is Disk-D. Right-click on it and choose from the menu – Delete Volume. Click OK. As a result, we receive an unallocated area in the Disk. Then right-click on Disk-C and choose Extend Volume. The Volume Extend Wizard opens. Click Next. And some space from the unallocated space. Click Next. And ready. Now Disk-C is extended. To create Disk-D again, right-click here and select Create a Symbol Volume. As signs drive letter D, click Next. Formatted in NTFS – ready. As a result, Disk-C has increased and Disk-D has become smaller.