Information Technology Reference
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2. Using the arrow buttons or the timeline control on the side of
the screen, navigate to the snapshot you want to delete. Note that
if it occurred within the last day, you'll delete just that hourly run;
if it occurred earlier, you will delete the only remaining backup
for a particular day or week. You can verify which backup you'll
be deleting by looking at the large bar at the bottom of the window.
3. From the pop-up Action menu, choose Delete Backup. (It
doesn't matter whether you have any file or folder selected.)
Time Machine removes that entire snapshot from its backup. (You may
be prompted to enter an administrator password first.)
Delete All Instances of a Single File
To delete every backed up copy of a given file from your Time Machine
backup, follow these steps:
1. In the Finder, navigate to the folder that contains (or once
contained) any version of the file you want to delete; if you're
unsure where it is (or was), do a Spotlight search.
2. Click the Time Machine Dock icon or choose Enter Time Machine
from the Time Machine
menu to show the “time warp” display.
3. Using the arrow buttons or the timeline control on the side of the
screen, navigate to any previous version of the folder that contains
the file you want to delete. Click the file once to select it.
4. From the pop-up Action menu, choose Delete All Backups
of “File Name” . (You can also right-click or Control-click the item
and choose Delete All Backups of “File Name” from the contextual
menu.)
Time Machine removes from its backup every copy of that file, in that
location, that it ever backed up. (For some files, you may be prompted
to enter an administrator password first.)
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