Right-click anywhere on the desktop and choose New > Shortcut, as shown. This will start the Create Shortcut wizard.
Type in explorer “U:\”. You MUST include the quotation marks. Click Next.
You can name this shortcut whatever you want. Select Finish.
You then right-click on the shortcut and select Pin to Taskbar. You will now see the shortcut appear on the taskbar at the bottom of the screen.