To assign or change the drive letter for a disk or partition, simply right-click on it and choose Change Drive Letter and Paths. Click OK to close out all the dialogs and the drive should now show up in Windows with the new drive letter.
A window will pop up with the current drive letter, if there is one, and a couple of options. Next, you will choose the new drive letter from the dropdown list. 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.
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
You’ll see a list of volumes at the top and the disks and partitions at the bottom.
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. 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.
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.
Drive letters are alphabetical identifiers for volumes and each drive letter can be used once on one computer.
However, some users discover USB drive letter keeps changing each time they connect it to the same computer.