I know that Diskpart can do a lot of things that Disk Management cannot reach at. But there still are many problems that Diskpart cannot solve too. for example, it still cannot extend partition if there is no unallocated space next to the partition. Thus, we may find out some way to settle the problems. The third-party software AOMEI Partition Assistant can replace Diskpart, and it has many other features that Diskpart cannot reach at. if there are some questions you cannot solve with Diskpart, you can try AOMEI Partition Assitant.