Thread: One more SD card question
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Old 12-07-2019, 12:58 PM   #15
jhowell
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Posts: 7,091
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
The kindle keeps track of the books on it. It knows if you download or delete a book via the user interface. It only has to scan for changes after you attach it to a PC. (I believe that the Kindle app on Fire tablets scans its directories for new/deleted content when it is launched.)

When you sync it sends the info to Amazon. It does it between manual syncs too.
Last edited by jhowell; 12-07-2019 at 10:23 PM.
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