Fixed: 'Change Drive Letter and Paths' Greyed Out in Windows 10

Tracy King updated on Sep 11, 2020 to Partition Manager | How-to Articles

'Change Drive Letter and Paths' is greyed out in Windows 10 Disk Management, help!

"Here is the deal: Windows 10 Disk Management tool is not working for changing drive or partition drive letter since 'Change Drive Letter an Paths' option is greyed out. 
Disk Management can't change a drive letter on my Windows 10 PC. So what can I do? Is there another alternative way or method that can help me to change the drive letter of my hard drive partition or external storage devices?How?

Disk Management tool, as a Windows built-in management tool, support users to change device drive letter, shrink/extend and even combine partitions in Windows system. Users can even use this tool to perform some basic disk management jobs such as check disk partition, disk cleanup etc. So what can you do when you are unable to change drive letter with Disk Management in Windows 10?

Change Drive Letter and Paths is greyed out in Windows 10 Disk Management and you can't set a new drive letter to your hard drive partition or USB/SD card etc external storage devices? Relax!  Here below, you'll find reliable methods to effectively change device letter and make Disk Management tool back to work normally again.

Step 1. Change drive letter without using Disk Management

When Disk Management tool is not working to change drive letter on your PC or storage devices, don't worry. You can directly follow either one methods below to get your problem solved right now:

Method 1. Change drive letter with partition manager freeware 

Free partition manager software - EaseUS Partition Master Free supports you to simply change device drive letter without formatting in Windows 10/8/7.
You can just free download, install it on your PC and follow to change drive letter on your device now:

Download Now

 Windows 10 is supported


Step 1: Run EaseUS Partition Master, right-click the partition, and choose "Change Drive Letter".

Change Drive Letter - Step 1

Step 2: In the new window, click the down arrow and choose a drive letter for the partition from the drop-down menu, then click "OK".

Change Drive Letter - Step 2

Step 3: Click the "Execute Operation" button in the top-left corner, check the changes, and click "Apply" to change the drive letter of the selected partition.

Change Drive Letter - Step 3

Method 2. Change drive letter with CMD

1. Right-click Start and select Command Prompt (Admin);
2. Sign in as administrator and type: diskpart, hit Enter to continue;
3. Enter DiskPart window and type: list disk, hit Enter;
4. Type: list volume and hit Enter;
5. Type: select disk = 0 (replace 0 with the drive number of your disk) and hit Enter;
6. Type: select volume = 0 (replace 0 with the drive number of your disk) and hit Enter;
7. Type: assign letter = D (Replace D with the new drive letter that you want to add) and hit Enter.

After this, you've successfully added a new drive letter to your device. And if you want to make Disk Management tool work again, continue with Step 2 and Step 3. 

Step 2. Check and repair system disk error which stops disk management working

If the system disk contains some file system error or bad sectors, Disk Management tool may not be able to function normally. So your next move is to check and repair system disk error that stops Disk Management tool working.

Here you may directly apply EaseUS Partition Master Free for help:


Step 1: Open EaseUS Partition Master on your computer. Then locate the disk, right-click the partition you want to check, and choose "Check File System".

Check Partition - Step 1

Step 2: In the Check File System window, keep the "Try to fix errors if found" option selected and click "Start".

Check Partition - Step 2

Step 3: The software will begin checking your partition file system on your disk. When it has completed, click "Finish".

Check Partition - Step 3
Download Now

 Windows 10 is supported

Step 3. Perform system restore to repair disk management tool 

If Step 2 still doesn't work, then you may try the last step which is to perform a system restore - restoring Windows 10 to a previous healthy state so to make Disk Management work normally:

1. Go to Start > Settings > Update & security > Recovery;
2. Click Restart now under Advanced startup;

Perform System Restore to repair Disk Management tool

3. Enter Choose an option menu and select Troubleshoot > Advanced options > System Restore;

Repair 'change drive letter' greyed out error in Windows 10.

4. Select the proper system restore point and follow onscreen guidance to complete system restore. 
After this, you shall be able to use Windows 10 Disk Management to change drive letter of devices and perform other operations by then. 

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

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Video Tutorial

How to Partititon a Hard Drive on Windows 10/8/7