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I recently bought an external hard drive with 500GB capacity. hard drive is still in new condition and vacant. but when I would copy a file larger than 6GB hard drive can not copy the file. if I copy the file size of less than 6BG, the file can be copied.

what causes it?

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Are you running a 32 or 64bit version of Windows 7? –  qweet Jun 22 '12 at 13:10
    
What error(s) do you get when you try to copy files larger than 6gb? –  Nima Jun 22 '12 at 13:14
    
What is the external drive formatted as? If its FAT32 that may be the issue. –  OrionDarkwood Jun 22 '12 at 13:15
    
What error you get when you choose more than 6-GB data? Also is your HDD format in NTFS or FAT32? –  avirk Jun 22 '12 at 13:23
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1 Answer

Some filesystems (such as FAT32) have a 4GB limit on file sizes

Some cheap hard drives are fake

fake HDD 1 fake HDD 2

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And that's how SSD was invented. –  Nima Jun 22 '12 at 14:04
    
+1 for answer with really nice pictures! :D –  speakr Jun 22 '12 at 14:11
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