- Jun 12, 2005
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I have an external hard drive. On it are two folders. When I add the sizes of them, I get X gigabytes. Then when I right click the drive and hit properties, the used space says X+2.7 gigabytes. There's 2.7 gigs of unknown data on there. What's that all about? How do I find out what it is and if I can eliminate it? It's a 30gig hard drive.