How the computer modifies a disk's letter

1, we on the desktop right click on the computer and then in the pop-up menu we click "Management" and then open the Management dialog box:

2. On the left side of the open window we click on "Disk Management" and you will see the partition information as shown in the following figure. As shown in the following illustration:

3, now we put D disk letter E, if you choose D then right click, there is a change drive path and disk character options, as shown in the following figure:

4, and then will come out a window, which has changed options, as shown in the following figure:

5, after we click on the pop-up dialog box to select the new Letter option, as shown in the following figure:

6, the last click on the hit OK, and then will tell us the relevant prompts, we click on is:

7, then in our computer we see the D plate is not, only E disk OH: