How to merge two partitions of external hard disk on Windows 10/11?

HenryRobinson 

It is indeed possible to merge two partitions of an external hard disk using the CMD command line through "diskpart", but you need to be careful in the operation. You can use the Windows built-in command line tool "diskpart" to manage partitions, but it is not easy to merge two partitions directly. Usually you need to delete one of the partitions and then expand the other partition.

The steps are as follows:

1. Open the command prompt, enter diskpart, and press Enter.
2. Enter list disk to view all hard disks and find the number of your external hard disk.
3. Enter select disk X (X is the number of your external hard disk).
4. Enter list partition to view the partitions and find the number of the partition you want to delete.
5. Enter select partition Y (Y is the number of the partition you want to delete).
6. Enter delete partition to delete the partition.
7. Then, select the remaining partitions: select partition Z (Z is the number of the partition you want to expand).
8. Enter the extend command to expand this partition.

Although you can merge two partitions of external hard disk in this way, you need to be particularly careful. Once you make a mistake, you may lose data. So, be sure to back up your data before the operation!