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Tuesday 30 July 2013

How to Exclude Folders from Time Machine Backups

Do you have a huge folder or ten you don’t want to include in Time Machine backups? Maybe just a few files that aren’t necessary to keep, or that you have a different backup solution for? Maybe you just want to slim down the size of a backup, or speed things up by excluding a large item that just isn’t necessary to access in the future? For most users, you’d want to let Time Machine run it’s course and handle things on it’s own, but if necessary it’s really quite easy to manually exclude files and directories from Time Machine, thereby preventing them from being backed up by the automated service entirely.
Exclude from Time Machine



In classic Mac fashion, this is extremely easy to do, and it’s all quite user friendly.

How to Exclude Items from a Time Machine Backup

Using this trick you can exclude virtually anything from the automated time machine backups:
  • Launch System Preferences and click on “Time Machine”
  • Click on “Options”
  • Drag and drop folders into the ‘Exclude items from backup’ list
  • Click Save and close out of System Preferences
There’s no limit on what you can exclude, so add as many items into this list as necessary.
Exclude a folder from Time Machine backups


If you’re averse to dragging and dropping or just prefer the classic “Open” dialog box for navigation, you can also click the + plus button and manually select items and folders to exclude. Repeat the process until all that you want excluded is in the list.
Changes will not impact past Time Machine backups, but future backups with Time Machine will acknowledge the exclusion list and prevent those items from being backed up, at least until they have been removed again.

Re-Including Items into the Backups

As you may have guessed, having the files or folders reincluded in the backup is just a matter of removing the items from the exclusion list. To do that, just the name of the file/folder in question, and hit the Delete key, or click the minus button in the exclusion window to remove it from the blocked list and then add it to the backups list. That process will also simultaneously start a new backup if a Time Machine drive is accessible.
It’s generally a good idea to keep a complete backup of a Mac, and if you don’t know what to exclude you probably shouldn’t exclude anything and just let Mac OS X handle the whole process on it’s own.

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