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# Deleting duplicate files

To reclaim free space, you can select and delete duplicate files from the list Decloner generates during scan. Decloner will never delete files on its own. Even when you select and delete files in Decloner, it moves the files to Decloner Trash so you can recover them if you change your mind.

Decloner shows duplicate files in groups. Each group contains identical files that may have different names and/or locations. The file information area below the list shows information for the currently selected file and its preview.

Decloner will not allow you to delete all files from a duplicate file group. At least one copy of a file has to remain unmarked, otherwise the entire group will be ignored.

## To select and delete duplicate files:

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Put a check mark against files you want to delete, or press ⌘M to mark/unmark the currently selected file or group.

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To preview the selected file using QuickLook, press space bar. Pressing space bar again closes QuickLook. While QuickLook is active, use arrow keys to select other files in the list.

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To expand all groups, choose View→Expand All command from the menu, or press ⌘→.

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To collapse all groups, choose View→Collapse All command from the menu or press ⌘←.

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To select all duplicate files, leaving only the newest file in each group of duplicates, choose Keep Newest command from the Select menu button.

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To automatically select all duplicate files that should be deleted, leaving the newest file in each group, or in case of images, preferring Aperture files to iPhoto files, and iPhoto files to ordinary files, click Select Duplicates button, or choose Select→Select Duplicates from the menu, or press ⇧⌘A.

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To delete all selected files, click Delete Selected Files button or press ⌘⌫.

### Related Topics

scanning

excluding

Decloner Trash

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