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			 The Reader 
			
			![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 52 
				Karma: 10714 
				Join Date: Mar 2010 
				Location: USA 
				
				
				Device: Aura HD 
				
				
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			So my Aura was complaining that it can't update as there isn't enough free space in the internal storage. This surprised me as I store all books in the SD card and even that wouldn't be enough to take up 4GB. 
		
	
		
		
		
		
		
		
		
		
		
		
	
	So I opened the internal folder in Windows Explorer and found a strange folder with a string of numbers as its name. Within this folder were numerous files and one folder named "cpbf" followed by a string of zeroes. Within this folder are 3 files, one of which is named the same as the original folder and the other 2 are "cpbdf" and "cpbmf". The size of "cpbdf" is 2.9GB. Any idea what this file is and why is it so big?  | 
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			 Wizard 
			
			![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 3,821 
				Karma: 19162882 
				Join Date: Nov 2012 
				Location: Te Riu-a-Māui 
				
				
				Device: Kobo Glo 
				
				
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		 Quote: 
	
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		#3 | 
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			 Wizard 
			
			![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 4,466 
				Karma: 6900052 
				Join Date: Dec 2009 
				Location: The Heart of Texas 
				
				
				Device: Boox Note2, AuraHD, PDA, 
				
				
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			Googling seems to suggest they might be "CrashPlan" related; 
		
	
		
		
		
		
		
		
		
		
		
		
	
	https://www.google.com/#sclient=psy-...w=1189&bih=723 The developers might have left something in the wrong place. You could copy all that to a folder on your PC for now, and continue with your update. Luck; Ken  | 
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			 The Reader 
			
			![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 52 
				Karma: 10714 
				Join Date: Mar 2010 
				Location: USA 
				
				
				Device: Aura HD 
				
				
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			Thanks for the tip. It might be CrashPlan which I have installed. It saw my Aura as a drive it was backing up to. So it should be safe to delete this folder.
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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