How to Back Up an iPhone to an External Drive
By Isobel Phillips
By default, iTunes backs up your iPhone to a folder under your user account on drive C and there is no built-in function to change the backup location from within iTunes. If you use a solid state drive as your primary Windows drive, you may find your iPhone's backup taking up too much expensive storage space. In Windows Vista and later versions of Windows, you can force iTunes to back up to a secondary or external drive by creating a symbolic link from the default backup folder to the new location.
Close the iTunes program. Hold down the "Ctrl," "Alt" and "Del" keys and select "Task Manager." Under the "Processes" tab, close any remaining iTunes processes such as iTunesHelper.exe.
Locate your iTunes backup directory under your user account on drive C. In Windows 8 the default location is C:\Users\
Move the iTunes backup directory to your external drive. For example, to move the backup to drive F in Windows 8, from the Search charm type "cmd" without quotes into the search box and click "Command Prompt." Type the following into the command window, replacing "
Press "Enter" to complete the command.
Create a symbolic link to the new location. Type the following in the command window, replacing "
mklink /J "C:\Users\
Isobel Phillips has been writing technical documentation, marketing and educational resources since 1980. She also writes on personal development for the website UnleashYourGrowth. Phillips is a qualified accountant, has lectured in accounting, math, English and information technology and holds a Bachelor of Arts honors degree in English from the University of Leeds.