How can I change the Backup directory of devices in iTunes?

Moving the iOS device backup location

Open a command prompt by hitting the start button and typing CMD<Enter> in the search box that opens up, or with Start > Run on older Windows.

To move the current backup folder from C: to D: (for example) type in this command and press <Enter>

Move "C:\Users\<User>\AppData\Roaming\Apple Computer\MobileSync\Backup" "D:\Backup"

Where <User> is your Windows user name.

To make iTunes look for the data in the new location type in this command and press <Enter>

MkLink /J "C:\Users\<User>\AppData\Roaming\Apple Computer\MobileSync\Backup" "D:\Backup"

If your preferred drive has a different letter or you already have a folder called "Backup" then edit "D:\Backup" accordingly in both commands.

If you have Windows XP then you'll need a third-party tool such as Junction to link the two locations together instead of the MkLink command. The source folder is C:\Documents and Settings\<User>\Application Data\Apple Computer\MobileSync\Backup

tt2