First, right click on the Computer icon on the desktop and choose Manage.
Now click on Disk Management in the left hand pane.
Now you will see a list of all the volumes on the Windows 7 computer and a break-down of the partitions by disk. For any removable media you may have attached like USB flash drives, you will see the word “Removable” under the name of the disk.
To change the drive letter, simply right-click on the partition and choose Change Drive Letter and Paths.
Then click on the Change button and then choose a new letter from the drop down menu.
That’s pretty much it! Like I said earlier, it’s pretty straight-forward. If you have any problems changing a drive letter on your Windows 7 PC, post a comment here and I will try to help. Enjoy!