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I know that there is a window where time machine can display its current progress, along with an estimate about how long it will likely take till the current backup is complete. This window did somehow appear during my initial backup. However, I currently can't find a way to manually open that window for a subsequent backup. Yes there is the Time Machine tab in the Control Panel, but that will not provide an estimation of remanining time. Neither does the context menu of the menu bar icon. So how can I get that window?

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This window only appears on the first TM run (when you create a new TM backup on an empty disk) – patrix Dec 1 '12 at 23:18
@patrix, would you turn that comment into an answer? I find it contains more detail than the current answer. – MvG Dec 2 '12 at 11:34

4 Answers 4

up vote 3 down vote accepted

I am 100% sure there is no way to see how long the the backup takes just the size of the backup and how much portion of the size it has already backed up like shown below.

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The only time duration that Time Machine shows is when you are restoring from a backup and during the first time you set up Time Machine using a empty hard disk.

I just noticed that "Open Time Machine Preferences" shows a progress bar for the current backup operation. I just upgraded to Maverick recently so this may be a new feature.

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This window only appears on the first TM run (when you create a new TM backup on an empty disk)

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Progress is always available. Go to SYSTEM PREFERENCES --> Time Machine.....

It will show you the current progress. Mine currently at 258 of 388GB (28 minutes left) :)

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Is that Maverick as well, or something older? – MvG Jan 5 '14 at 7:32
it should be marked as accepted – h4ck3d Jul 18 at 12:58

If you click the time machine icon on the top bar of your Mac, go to Time Machine Preferences, and (assuming you have a backup in progress) the estimated time remaining as well as the file size should show in this windowMine currently says 20.7GB of 47GB, with about 22 minutes remaining

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