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. 
I have a 500GB disk that's empty. I designated it as the Time Machine disk.
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.
The internal disk has 95GB of data on it.
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.
Yet Time Machine reports that there is 1.4 terabytes of data that it wants to back up.
Of course it fails when it tries to do this. (Only 500GB on the backup disk.)
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.
Here's a screen shot of the Options panel for Time Machine.
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.)
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