How to Assign a Drive Letter to an iPhoneby Kirk Bennet
If you have an iPhone, you can use it to store large amounts of data, connect to wireless networks when you're away from your computer and sync music, calendars and apps with your computer. When you connect an iPhone to a PC, Windows 7 assigns a drive letter to the device. If you want to always use the same drive letter for your iPhone -- you run automated tasks that require a permanent path, for example -- you must assign it in Windows. Assigning a drive letter takes just a few minutes.
Connect the iPhone to your computer.
Open the Start menu and click "Control Panel" to open the Control Panel.
Click the "System and Security" link to navigate to the System and Security section of the Control Panel.
Click the "Administrative Tools" link to open the Administrative Tools window.
Double-click "Computer Management" to open the Computer Management window.
Click "Disk Management" in the left pane, under Storage.
Right-click the drive currently assigned to your iPhone and select the "Change Drive Letters and Paths" option from the context menu.
Click the "Change" button to open the Change Drive Letter or Path window.
Select the drive letter from the drop-down box next to the "Assign the following drive letter" option.
Click "OK" and click "Yes" to confirm the action.
Close the Computer Management and Control Panel windows.