Turn Off Requests To Use New Disks for Time Machine [OS X Tips]



If you don’t use Time Machine, you might notice that every time you attach a new and/or blank hard disk to the computer you get asked if you want to use it for backups. Here’s a simple trick that will stop that happening.

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Here’s another tip from Mac Kung Fu, which contains over 300 tips, tricks, hints and hacks for OS X. It’s available from Amazon as well as other bookstores, and also as an eBook for all eReaders.

You can stop this request dialog box from appearing by opening a Terminal window (Finder -> Applications -> Utilities – > Terminal) and typing the following:

defaults write com.apple.TimeMachine DoNotOfferNewDisksForBackup -bool TRUE

Then log out and back in again for the changes to take effect.

If you’d like to restore the request dialog at a later date, again open Terminal then type the following (log out and back in again after for the changes to take effect):

defaults delete com.apple.TimeMachine DoNotOfferNewDisksForBackup