For different versions of Windows, the procedure for changing the drive letter is almost the same.
To change the drive letter in Windows 8, click “Start“, type “Control Panel” on the screen, select “Control Panel” – “Administration” – “Computer Management” – “Disk Management“.
On the right disk, right-click the bears and select “Change Drive Letter and Path …“, click “Change…” in the window that opens, select “Assign the folowing drive latter” if it is not selected and select the desired letter, click “OK” to finish. Click “Yes” to confirm.
You can also open the Computer Management window by typing “compmgmt.msc” on the command line or in the search bar.