Fix Can't Extend C Drive with Unallocated Space in Windows 1011

Locate your system partition — that's probably the C: partition. Right-click on it and select “Shrink Volume.” If you have multiple partitions ...

Select and hold (or right-click) the volume that you want to extend, and then select Extend Volume. The Extend Volume Wizard opens.

Right click the partition and select Resize/Move partition; On a disk map, current size of the partition is displayed on the top of the dialog ...

You can move the recovery partition easily. Any 3rd party partitioning software can do that, like MiniTool Partition Wizard, AOMEI Partition Assistant, EaseUS ...

Cross-partition extension is not permitted. Due to Windows operating system limitations, you cannot extend a partition across another.

Type and search [Computer Management] in the Windows search bar①, then click [Run as administrator]②. In Computer Management, select [Disk Management]③. In Disk Management, right-click the existing volume you want to extend④, then select [Extend

Step 1. Install and launch AOMEI Partition Assistant. You may get some free space via “Resize Partition” first if there's no unallocated space.

2. How do I extend my Windows partition? · Open Disk Management and right-click a partition next to your target drive, select Shrink Volume.