This procedure swaps drive letters for drives C and D. This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it.
Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see How to back up and restore the registry in Windows. Verify that Administrators have full control. Change it back when you are finished with these steps. Change the permissions back to the previous setting for Administrators. It should probably be Read Only. Skip to main content.
I understand the inconvenience you are facing currently. Since when are you facing this issue? Did you make any changes in prior to this issue? Right click on the external drive and click on Change Drive letter and paths.
Click on Change the button. Under Assign the following Drive letter , select the desired drive letter. Click Ok to save changes. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site. In reply to A. User's post on December 13, Thank you for your response. Is there any way to keep it at E:? All I did was install Windows I'm not sure what could be causing this problem.
In reply to Joseph Rosenquist's post on December 13, Hi Joseph, I apologize for not addressing you in a timely manner. With checking this option and click "OK," we can see the missing drive letters in Windows Explorer again. As we know, Disk Management is a Windows snap-in partitioning program designed to help Windows users manage disk and partitions.
In Disk Management, every drive should have a drive letter, but sometimes we may find one or some of drives lose their letters like this:. Here we can see the Generally, if a partition is not allocated with a letter in Disk Management, it will be invisible in Windows Explorer:.
As a result, we are unable to access files saved in it directly, and all programs relying on the drive letter will be unavailable. Therefore, under this situation, users would be more eager to get the missing drive letter back. In Windows Disk Management, the function "Change Drive Letter and Paths," which appears in the right-click menu of a partition Windows calls it volume , can help add, change, and remove drive letter:.
If "Remove" is selected and applied, the letter of the target drive will be removed and disappear in Disk Management, which is one of the reasons for losing drive letter.
On the contrary, by clicking "Add," we can assign a letter to the selected drive. Therefore, when a certain drive loses its letter, we can try adding a drive letter in this way. But for successful adding, you may need to pay some attention to the following tip:. If not, programs relying on the original letter might not work correctly.
If the original letter has been taken by new drive, change the letter of the new drive to another available letter and then allocate the released one for the target drive. In addition, partitions that are hidden via special technologies set partition type ID to 0x17, for example are always having no letter. If a partition is hidden, the function "Change Drive Letter and Paths" for this partition in Disk Management will be unavailable grayed out.
At this time, the best solution is to unhide the partition by using third party program. If you failed to assign a letter for your drive in Disk Management, now try using MiniTool Partition Wizard Free edition to unhide partition, which is a freeware for Windows home users. Free Download. Step 4. Click "Apply" button to apply the change if the missing drive appears in Partition Wizard. When MiniTool Partition Wizard shows it succeeded in applying the operation, letter of the partition will be visible in Disk Management, and the missing drive will also appear in Windows Explorer.
Click to tweet. We have mentioned that it is very easy to add or change drive letter for certain partition in Disk Management. However sometimes you may find a strange situation where a specific letter is not shown in the list of available drive letters and no other device has that letter assigned. The most probable reason may be that this letter is reserved for a removable device that was removed or is hidden.
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