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How to for Time Machine?

Tuesday, July 22, 2008 by Dave Winer.

I have a surplus of disk space, so I decided to give Time Machine a try.  Permalink to this paragraph

I have a 500GB disk that's empty. I designated it as the Time Machine disk. Permalink to this paragraph

I have one external disk that I want to keep backed up. I don't care about the internal disk, but there doesn't seem to be a way to tell Time Machine not to back it up.  Permalink to this paragraph

The internal disk has 95GB of data on it. Permalink to this paragraph

The external disk has 193GB. Its name is Ohio. This is the only disk I want backed up. I don't mind copying things onto it to be sure they're backed up.  Permalink to this paragraph

Yet Time Machine reports that there is 1.4 terabytes of data that it wants to back up. Permalink to this paragraph

Of course it fails when it tries to do this. (Only 500GB on the backup disk.) Permalink to this paragraph

The Help docs don't cover this circumstance, nor do any of the articles I have found on Google. What gives. Hasn't anyone had this problem yet? Where is it finding the 1.4TB of data to back up and how do I tell it not to bother. Permalink to this paragraph

Here's a screen shot of the Options panel for Time Machine. Permalink to this paragraph

Never mind. I didn't understand the UI. The + in the UI means exclude something from the backup. Dumb old Dave. I thought a plus would mean "add it." Why would I think that? (Sorry for the sarcasm.) Permalink to this paragraph


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A picture named dave.jpgDave Winer, 53, pioneered the development of weblogs, syndication (RSS), podcasting, outlining, and web content management software; former contributing editor at Wired Magazine, research fellow at Harvard Law School, entrepreneur, and investor in web media companies. A native New Yorker, he received a Master's in Computer Science from the University of Wisconsin, a Bachelor's in Mathematics from Tulane University and currently lives in Berkeley, California.

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