EASEUS Partition Manager is the best hard disk partitioning tool, easeuspartition
You can delete or format partitions, reset the size, and move your partitions. If you do not have any free disk space, you can reduce the size of existing partitions, and then use unallocated disk space to create new or expand partitions to better manage your data. In addition, you can view disk and partition attributes, set an active partition, and change the drive letter. EASEUS Partition Manager can run from within Windows. It also includes an option for creating a boot disc, allowing you to manage your partitions before Windows is loaded (some changes may be needed.
Here, the space for disk F is reduced and an H disk is created with the reduced space:
Note:Adjust the Shard to be pulled before and then to solve the problem of which adjacent drive letter the adjusted free space is extended!