change drive letter for usb

This browser is no longer supported.

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Change a drive letter

• 4 contributors

Applies To: Windows 11, Windows 10, Windows Server 2022, Windows Server 2019, and Windows Server 2016

If you want to change a drive letter assigned to a drive, or you have a drive that doesn't yet have a drive letter, use Disk Management to change it. You can also mount the drive in an empty folder so that it appears as a folder. For more information, see Mount a drive in a folder .

If you change the drive letter of a drive that already contains Windows or apps, apps might have trouble running or finding the drive. We suggest not changing the drive letter of a drive that already contains Windows or apps.

The following steps show how to change the drive letter.

Open Disk Management with administrator permissions.

In Disk Management, select and hold (or right-click) the volume on which you want to change or add a drive letter and select Change Drive Letter and Paths .

If you don't see the Change Drive Letter and Paths option or it's grayed out, the volume either isn't ready to receive a drive letter or it's unallocated and needs to be initialized . It might also be that the drive isn't accessible, which is the case with EFI system partitions and recovery partitions. If you've confirmed that your volume is formatted with a drive letter that you can access but you're still unable to change it, that's beyond the scope of this article. We suggest contacting Microsoft Support or the manufacturer of your PC for more help.

To change the drive letter, select Change . To add a drive letter if the drive doesn't already have one, select Add .

Select the new drive letter and choose OK . Then select Yes when prompted about how programs that rely on the drive letter might not run correctly.

Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: https://aka.ms/ContentUserFeedback .

Submit and view feedback for

Additional resources

• Is a New iPad Pro Coming Soon?
• Get It Now: Spring Tech Deals at Amazon

How to Change a Drive Letter

Don't like the letters assigned to your drives in Windows? Change them!

• Emporia State University

• The Ultimate Laptop Buying Guide

What to Know

• Open Disk Management. Locate the drive you want to change. Right-click and choose Change Drive Letter and Paths > Change .
• Select the drive letter you want to assign from Assign the following drive letter . Then select OK and choose Yes .

The letters assigned to your hard drives, optical drives, and USB drives in Windows are not fixed. Use the Disk Management tool in Windows to change drive letters. These steps apply to Windows XP and newer versions of Windows .

How to Change Drive Letters in Windows

Follow these steps to change the driver letters in any version of Windows.

You can't change the drive letter of the partition that Windows is installed onto. On most computers, this is usually the C drive.

Open Disk Management , the tool in Windows that lets you manage drive letters, among [many] other things.

In Windows 11/10/8, Disk Management is also available from the Power User Menu ( WIN + X  keyboard shortcut) and is probably the quickest way to open it. You can also start Disk Management from the Command Prompt in any version of Windows, but starting it via Computer Management is probably best for most of you.

Locate from the list at the top, or from the map at the bottom, the drive you want to change the drive letter of.

If you're not sure that the drive you're looking at is really the one you want to change the drive letter for, you can right-click or tap-and-hold the drive and then choose Explore . If you need to, look through the folders to see if that's the right drive.

Right-click or tap-and-hold the drive and choose Change Drive Letter and Paths .

Select Change .

If you've selected the primary drive by accident, some versions of Windows will display a message that reads Windows cannot modify the drive letter of your system volume or boot volume.

Choose the drive letter you want Windows to assign to this storage device by selecting it from the Assign the following drive letter drop-down box.

You don't need to worry if the drive letter is already being used by another drive because Windows hides any letters you can't use.

Select OK .

Choose Yes to the Some programs that rely on drive letters might not run correctly. Do you want to continue? question.

If you have software installed to this drive, it might stop working properly after changing the drive letter. See details on this in the section below.

Once the drive letter change is complete, which usually only takes a second or two, you're welcome to close any open Disk Management or other windows.

The drive letter is different from the volume label. You can change the volume label using similar steps .

If You Have Programs Not on the Main Drive

Changing drive letter assignments for drives that have software installed to them may cause the software to stop working. This isn't quite as common with newer programs and apps but if you have an old program, especially if you're still using Windows XP or Windows Vista, this is likely to be a problem.

Fortunately, most of us don't have software installed to drives other than the primary drive (typically the C drive), but if you do, consider this your warning that you might need to reinstall the software after changing the drive letter.

No Changes for the Operating System Drive

You cannot change the drive letter of the drive that the Windows operating system is installed on. If you'd like Windows to exist on a drive other than C , or whatever it happens to be now, you can make that happen but you'll have to complete a clean install of Windows to do it. Unless you have a pressing need to have Windows exist on a different drive letter, we don't recommend going through all that trouble.

Change, Don't Switch

There's no built-in way to switch drive letters between two drives in Windows. Instead, use a drive letter that you don't plan on using as a temporary "holding" letter during the drive letter change process.

For example, let's say you'd like to swap Drive A for Drive B . Start by changing Drive A's letter to one that you don't plan on using (like X ), then Drive B's letter to Drive A's original one, and finally Drive A's letter to Drive B's original one.

Using the Command Prompt

You can also change the drive letter from Command Prompt . It's not as easy as using Disk Management and you can't see right away which letters are available to choose, but it is completely doable with the diskpart command.

Get the Latest Tech News Delivered Every Day

• The 34 Best Free Data Destruction Tools of 2024
• 10 Best Free Disk Partition Software Tools
• What Is a Volume Label of a Drive?
• How to Format a Hard Drive in Windows
• How to Open Disk Management
• AOMEI Partition Assistant Standard Edition v10.3.1 Review
• How to Partition a Hard Drive (Windows 11, 10, 8, 7, +)
• How to Open Disk Management From Command Prompt
• How to Delete System Error Memory Dump Files
• How to Change the Default Download Location in Windows 11
• What Is a Mapped Drive?
• How to Find a Drive's Volume Label or Serial Number
• What Is the NTFS File System?
• How to Use the Format Command to Write Zeros to a Hard Drive
• What Is a Partition?
• Disk Management

How to Change a Drive Letter in Windows

Sometimes when you plug in a USB device, it doesn't show up

A task you will most likely have to perform a few times in Windows is changing the drive letter for an external hard drive, mapped network drive , or DVD drive. Sometimes when you plug in a USB flash drive, it doesn’t automatically get a drive letter assigned to it and it may not show up on your computer.

In those types of cases, you have to change the drive letter for the device and it will normally pop right up. In this article, I’ll show you how to change the drive letter for these devices using the GUI and also via the command prompt.

Change Drive Letter via Disk Management

You can open disk management on a Windows PC by either right-clicking on the Computer or This PC icon on the desktop and choosing Manage or by clicking on Start and typing in diskmgmt.msc .

You’ll see a list of volumes at the top and the disks and partitions at the bottom. Any partition that has a drive letter will be shown in the white area. If you connected a USB drive and you see it listed, but it doesn’t have a drive letter, you can now assign one.

To assign or change the drive letter for a disk or partition, simply right-click on it and choose Change Drive Letter and Paths .

A window will pop up with the current drive letter, if there is one, and a couple of options. Here you want to click on Change .

Next, you will choose the new drive letter from the dropdown list. You can pick from the letters A to Z.

That’s about it. Click OK to close out all the dialogs and the drive should now show up in Windows with the new drive letter. If you’re having issues using the GUI interface or you simply feel more comfortable using the command prompt, read the instructions below on how to use diskpart.

Use DiskPart to Assign Drive Letter

If you need to change or assign a drive letter via the command prompt, you have to use the diskpart command. I’ve written a bit on how to use diskpart , which is really useful for many disk management tasks.

To get started, open an administrator command prompt in Windows by clicking on Start, typing in CMD and then right-clicking and choosing Run as Administrator .

Now type in the following commands, each followed by the Enter key.

Above, you’ll replace x with the volume number in the list that corresponds to the drive you want to change and with the letter you want to assign to the drive. Here are the commands I ran for an external USB drive:

You’ll also notice that under the Type column, external drives will show up as Removable . That’s a good way to check before you select a volume. You can also figure out which drive is correct by looking at the size and also looking at the Info column. Volume 0 in my case is the system partition, so I wouldn’t want to mess with that by accident.

Overall, it’s a fairly simple process and hopefully you won’t run into any problems. There are times, however, when things don’t work properly. Below are some possible reasons.

Troubleshoot Can’t Change Drive Letter in Windows

One problem that I have seen is that the Change Drive Letter option is simply greyed out. This can occur for a few reasons. One of the main reasons is the volume is not formatted in FAT or NTFS format. For example, if you are attaching a disk from a Mac computer, you will not be able to change the drive letter unless you format the drive into a compatible format.

Another reason is if the drive is set to read-only. If so, you’ll have to Google the steps to change the drive to allow read/write access.

Also, if you don’t need any of the data on the volume in question, a simple solution is to delete the volume, which is normally never greyed out. Once you delete the volume, you can right-click again and create a new simple volume. Now you will be able to change the drive letter.

Make sure to read my other tips on how to hide drive in Windows and how to map a folder to a drive letter in Windows. If you have any questions, feel free to comment. Enjoy!

Founder of Help Desk Geek and managing editor. He began blogging in 2007 and quit his job in 2010 to blog full-time. He has over 15 years of industry experience in IT and holds several technical certifications. Read Aseem's Full Bio

Read More Posts:

Leave a Reply

Your email address will not be published. Required fields are marked *

How to Change Drive Letter in Windows 10 & 11

Drive or partition letters are not fixed. You can change them. Here is how to change a drive letter in Windows 10 & 11 operating systems.

Windows automatically assigns a unique drive letter for all the drives, partitions, and plugged-in USB drives. Generally, the assigned letters are in incremental order starting with the letter C. For the most part, you don’t have to change the drive letter as it is pretty inconsequential in most cases. However, there might be times when you need to manually modify the drive letter of a drive, partition, or plugged-in USB drive to meet certain requirements.

For example, I want to use the drive letter X for one of my partitions because one of my older scripts requires it. The script won’t work as intended if it doesn’t have that specific drive letter. Since these are older files, and there are many of them, in typical Windows fashion, I tend to swap the drive letter rather than making the necessary changes to the script files.

Thankfully, Windows has several ways to change the drive letter . You can use the built-in partition manager or execute a few commands in the terminal. I will show both ways, follow the method you like.

Table of contents:

Change drive letter using partition manager

Commands to change drive letter.

Note: Close all active programs except your browser before proceeding with the below steps. It will reduce potential conflicts between programs and the drives.

Important: Do not change the drive letter of system volume or boot partition (C drive).

The steps below work the same in Windows 10 and 11.

Though most don’t know, Windows has a built-in partition manager called Disk Management. You can use it to quickly and easily change the drive letter. All you have to do is go to the drive options and choose the new drive letter.

Here is how to do it:

• Press “ Win + R ” to open Run .
• Type “ diskmgmt.msc ” and click “ Ok .”
• Find the drive you want to modify.
• Right-click on the drive.
• Choose the “ Change drive letter and paths ” option.
• Click the “ Change ” button.
• Select the “ Assign the following drive letter ” radio option.
• Choose a drive letter from the dropdown.
• Click “ Ok .”
• Click “ Yes ” in the warning window.
• Again, click “ Yes ” in the second warning window.
• Close the main disk management window.
• You have successfully changed the drive letter in Windows 10 and 11.

Steps with more details:

First, search and open “Create and format hard disk partitions” from the Start menu. You can also use the “diskmgmt.msc” Run (Win + R) command.

After opening the Disk Management tool, find the drive you want to change the drive letter, right-click on it, and choose the “Change drive letter and paths” option.

Now, click the “Change” button.

Select the “Assign the following drive letter” radio option, choose a drive letter from the dropdown menu, and press “Ok.”

You will see a couple of warning prompts. Press the “Yes” button in both prompts.

Finally, close the Disk Management tool, and you are done.

That is all. You’ve successfully changed the drive letter in Windows. To make the changes take full effect, reboot the system.

You can use the diskpart command to change the drive letter of any drive, partition, or USB drive in Windows. Here’s how to use the command to modify the drive letter.

Press the Windows Key to open the Start menu . Type “ Command Prompt ,” right-click on the result, and select the “ Run as administrator ” option. You can also right-click the Start menu, choose “Windows Terminal (Admin),” and open the Command Prompt tab in it.

After opening the cmd window, type “ diskpart ” and press Enter. This will launch the diskpart program in the cmd window.

Type “ list volume ” and press Enter.

The above command will list all partitions and their volume numbers. Take note of the volume number of the drive you want to modify.

Next, execute the “ select volume #number ” command. Don’t forget to replace the #number with the actual volume number.

After selecting the volume, execute the “ assign letter=NewDriveLetter ” command. Replace “ NewDriveLetter ” with the actual drive letter you want to assign.

Once assigned, close the cmd window.

That is all. Once the diskpart commands are executed successfully, the drive letter is changed instantly. To make the changes take full effect, reboot Windows.

I hope this simple and easy Windows how-to guide helped you.

If you are stuck or need some help, send an email, and I will try to help as much as possible.

Did you know you can change a drive icon to anything you want? Follow the linked article to understand how to do it.

Leave a Comment Cancel Reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

How-To Geek

How to assign a persistent drive letter to a usb drive in windows.

If you use multiple USB drives, you've probably noticed that the drive letter can be different each time you plug one in.

If you use multiple USB drives, you've probably noticed that the drive letter can be different each time you plug one in. If you'd like to assign a static letter to a drive that's the same every time you plug it in, read on.

Windows assigns drive letters to whatever type of drive is available---floppies, internal hard disks, optical drives, SD cards, and external USB drives. This can be annoying---especially if you use backup tools  or portable apps that prefer to have the same drive letter every time.

Related: What Is a "Portable" App, and Why Does It Matter?

To work with drive letters, you'll use the Disk Management tool built into Windows. In Windows 7, 8, or 10, click Start, type "create and format," and then click "Create and format hard disk partitions." Don't worry. You're not going to be formatting or creating anything. That's just the Start menu entry for the Disk Management tool. This procedure works the same in pretty much any version of Windows (though in Windows XP and Vista, you'd need to launch Disk Management through the Administrative Tools item in the Control Panel).

Windows will scan and then display all the drives connected to your PC in the Disk Management window. Right-click the USB drive to which you want to assign a persistent drive letter and then click "Change Drive Letter and Paths."

The "Change Drive Letter and Paths" window the selected drive's current drive letter. To change the drive letter, click "Change."

In the "Change Drive Letter or Path" window that opens, make sure the "Assign the following drive letter" option is selected and then use the drop-down menu to select a new drive letter. When you're done, click "OK."

NOTE: We suggest picking a drive letter between M and Z, because earlier drive letters may still get assigned to drives that don't always show up in File Explorer---like optical and removable card drives. M through Z are almost never used on most Windows systems.

Windows will display a warning letting you know that some apps might rely on drive letters to run properly. For the most part, you won't have to worry about this. But if you do have any apps in which you've specified another drive letter for this drive, you may need to change them. Click "Yes" to continue.

Back in the main Disk Management window, you should see the new drive letter assigned to the drive. You can now close the Disk Management window.

From now on, when you disconnect and reconnect the drive, that new drive letter should persist. You can also now use fixed paths for that drive in apps---such as back up apps---that may require them.

Change Drive Letter in Windows for an External USB Device

Sadly, Windows does not always figure it out for itself

This is a guide on how to change the drive letter in Windows for an external USB device like a hard drive or USB stick. Here’s a common problem that I have seen: You plug in a USB flash drive into your computer and it says ready to use, but for some reason nothing shows up in the list of drives. Take it out, plug it back in and still nothing shows up! What’s the problem? Well, it could be several things, but the most common issue is that the drive letter Windows is trying to assign to your device is already taken by another device or is mapped to a network drive.

Sadly, Windows does not always figure this out by itself (which is should) and your drive is basically lost in computer neverland. In order to fix it, we need to go to Computer Management and assign the drive letter manually. There are two ways to get to the Computer Management dialog in Windows, one through Control Panel and the second by right-clicking  Computer and choosing Manage.

Click on Disk Management under the Storage section and the right side will show you all of the current drives and partitions on your drive. If you don’t know what that means, don’t worry, just find the drive you are looking for in the graphs at the bottom. They are usually named Disk 0, Disk 1, CD-ROM, CD-ROM1, etc. If you’re looking for a USB flash drive, you’ll see the word “ Removable ” underneath Disk X. In my case, it’s the I: drive that is removable. However, if you have a large USB hard drive connected, then it may show up as an additional hard disk like mine shown below (H:).

By default, Windows gave my portable USB drive the letter H. If your drive has no letter or you want to change it, then right-click in the white space to the right of the drive letter and choose Change Drive Letter and Paths .

Click the Change button in the dialog box and then pick a new letter from the drop-down list. Just for your info, the Mount in the following NTFS folder option is used if you had right clicked on an external hard drive and instead of giving it a drive letter, you wanted to just have it show up as a folder on your current hard drive. That means you could create a folder in My Documents called pictures that actually points to another hard drive instead of one where all of your My Documents are currently stored.

Click Ok twice and your drive should now have the new letter assigned. Usually, if the USB stick was not showing up before, once you change the letter, it will automatically pop up and ask you what you want to do. That’s about it! You can also use Disk Management to format disks, determine the type of File System and see the amount of free space available.

Founder of Online Tech Tips and managing editor. He began blogging in 2007 and quit his job in 2010 to blog full-time. He has over 15 years of industry experience in IT and holds several technical certifications. Read Aseem's Full Bio

Read More Posts:

Contribute to the Windows forum! Click  HERE  to learn more  💡

March 14, 2024

Contribute to the Windows forum!

Click  HERE  to learn more  💡

Top Contributors in Windows 10: neilpzz  -  Reza Ameri  -  questions_  -  Ramesh Srinivasan  -  franco d'esaro   ✅

March 11, 2024

Top Contributors in Windows 10:

neilpzz  -  Reza Ameri  -  questions_  -  Ramesh Srinivasan  -  franco d'esaro   ✅

• Search the community and support articles
• Search Community member

Ask a new question

Windows 10 changing USB port drive letters

Report abuse, replies (5) .

Thank you for posting your query in Microsoft Community.

I understand the inconvenience you are facing currently.

I would appreciate if you can provide us the following information to help us understand the issue better.

• Since when are you facing this issue?
• Did you make any changes in prior to this issue?

I would like to inform you that the issue might have occurred due to some changes made to your computer.

I suggest you to try changing the drive letter of the drive and check if it helps.

Follow the steps to change the drive letter:

• Press Windows + X keys and click on Disk Management.
• 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.

Hope the information helps. Please let us know if the issue persist and we will be happy to assist you further.

47 people found this reply helpful

Was this reply helpful? Yes No

Sorry this didn't help.

Great! Thanks for your feedback.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

Thanks for your feedback.

1 person found this reply helpful

I apologize for not addressing you in a timely manner.

This issue might also occur when there are any Windows update component or system files corruptions during Windows 10 installation.

Ensure to update all pending updates and also, update all device drivers from the Device Manager. Remember to restart the system to keep the Windows up to date.

Please let us know if the issue persist and we will be happy to assist you further.

I have the same problem.

After I made a system recovery disk in a USB port, I lost one of the front ports.  I had a G and H port.  Now Windows 10 only recognizes a H port, no matter which front port I use.  Can I fix this?

After creating this back up disk, the computer reboots itself twice each time it restarts from a fresh start.

3 people found this reply helpful

Question Info

• Devices & drivers
• Norsk Bokmål
• Ελληνικά
• Русский
• עברית
• العربية
• ไทย
• 한국어
• 中文(简体)
• 中文(繁體)
• 日本語

Search Our Support Knowledge Base

How to change usb flash and external drive letter assignment on windows guided assist.

Change Drive Letters

1. Connect the external drive to the computer using the instructions below.     Do not use a USB hub.

Related Answers

• Steps to Change a Drive Letter in Windows
• My Cloud: Not Working with ipv6 Address Assignment
• Resolve USB Flash and External Drive Not Detected by Windows or macOS Guided Assist
• Remove and Reinstall USB Flash and External Drive USB Controller on Windows Guided Assist
• How To Test and Resolve USB Flash and External Drive Errors on Windows Guided Assist

Please rate the helpfulness of this answer

How to assign permanent letters to drives on Windows 10

You can assign drive letters manually, and in this guide, we show you how on Windows 10.

On Windows 10, when connecting a removable storage device or an internal hard drive, the system detects and assigns a drive letter automatically to make it usable. However, when reconnecting an external drive (such as a USB flash drive or SD or microSD cards), the system can end up assigning a different letter, which can be annoying.

If you want to see the same drive letter on a particular device, you can manually assign a permanent letter to any drive connected to your computer, and on Windows 10 , you can do this in at least three different ways, using Disk Management, Command Prompt, or PowerShell.

Using this approach will prevent Windows 10 from assigning a new letter or trying to set a letter already in use, which can cause conflicts. Also, it helps to select a drive letter that makes more sense to you.

In this Windows 10 guide, we walk you through several methods to manually assign a permanent letter to a drive, as long as you're connecting the drive to the same device and the letter isn't already in use.

How to assign a drive letter using Disk Management

How to assign a drive letter using command prompt, how to assign a drive letter using powershell.

To manage drive letters with the Disk Management tool, use these steps:

• Open Start .
• Search for Create and format hard disk partitions and click the top result to open the Disk Management experience.
• Right-click the drive and select the Change Drive Letter and Paths option.

• Click the Change button.

• Select the Assign the following drive letter option.
• Use the drop-down menu to assign a new drive letter. Quick tip: To avoid the system trying to assign the same letter to another drive, it's a good idea to start adding letters in backward order. For instance, instead of using D, E or F, it better to start with Z, Y or X when assigning a new letter.

• Click the OK button.
• Click the OK button again.

Once you complete these steps, the drive will permanently retain the assigned letter, even after reconnecting it. However, if you connect the drive to another device, it may receive a different letter.

While the easiest way to assign a new drive letter is to use Disk Management, you can also use DiskPart in Command Prompt to perform the same task.

Get the Windows Central Newsletter

All the latest news, reviews, and guides for Windows and Xbox diehards.

To assign a drive letter using Command Prompt, use these steps:

• Search for Command Prompt , right-click the result, and then select the Run as administrator option.
• Type the following command to start DiskPart and press Enter : diskpart
• Type the following command to list all the available volumes and press Enter : list volume
• Type the following command to select the volume (drive) to assign a new letter and press Enter: select volume 3 In the command, make sure to change "3" to the number that represents the drive on your device.
• Type the following command to assign a new drive letter, and press Enter : assign letter=Z The command assigns the letter "Z" to the drive assuming it's available. However, you need to make sure to change the letter for the one that you want to use.

After completing these steps, similar to Disk Management, every time you reconnect the storage to the same device, Windows 10 should assign the same letter automatically.

Alternatively, you can also use PowerShell to change a drive letter on Windows 10 using these steps:

• Search for PowerShell , right-click the result, and then select the Run as administrator option.
• Type the following command to list the available drives and press Enter : Get-Disk
• Type the following command to assign a permanent letter to the drive and press Enter : Get-Partition -DiskNumber 1 | Set-Partition -NewDriveLetter Z In the command, make sure to change "1" to the number that represents the drive that you want to modify, and change "Z" for the new letter that you want to use.

Once you complete the steps, the drive will be accessible through File Explorer using the letter that you assigned, and Windows 10 won't try to change it.

Updated March 7, 2019: We revised this guide to make sure it's current with the latest version of Windows 10.

More Windows 10 resources

For more helpful articles, coverage, and answers to common questions about Windows 10, visit the following resources:

• Windows 10 on Windows Central – All you need to know
• Windows 10 help, tips, and tricks
• Windows 10 forums on Windows Central

Mauro Huculak is technical writer for WindowsCentral.com. His primary focus is to write comprehensive how-tos to help users get the most out of Windows 10 and its many related technologies. He has an IT background with professional certifications from Microsoft, Cisco, and CompTIA, and he's a recognized member of the Microsoft MVP community.

• 2 How to create custom screensaver from your favorite images on Windows 11
• 3 Dragon's Dogma 2's first big update patch is here and adds a "New Game" option, but it's late on Xbox
• 4 Dragon's Dogma 2 'Hunt for the Jadeite Orb' quest guide: Location, who to give it to, and all outcomes
• 5 Microsoft says ChatGPT isn't better than Copilot AI; you're just not using it as intended