Get Mac OS X to Stop Asking to Use New Disks for Time Machine
All Mac users should setup Time Machine backups with an external hard drive, Time Capsule, or network drive to insure they have regular automatic backups made of their stuff and MacOS X installation. But once you have a backup drive established with Time Machine, or if you use a different backup approach entirely, you may no longer want to be asked if you’d like to setup a new hard disk as a Time Machine backup volume each time you connect a hard drive to the Mac.
To be clear, we’re talking about what happens when you connect a new blank hard drive to a Mac, which will trigger a dialog box that asks “Do you want to use (drive name) to back up with Time Machine?” with a “Use as backup disk” or “Don’t Use” option. This is the dialog request we are aiming to disable here for connecting new drives to the Mac. What we’re going to cover will not disable Time Machine, it only disables that pop-up backup disk request dialog box in Mac OS X.