I have WD external hard disk, which was working fine. Its MS-DOS formatted. I have downloaded a file in .mkv, which works fine, and isn't corrupted. Upon copying the 8 gb file, it says "The file is too big to be copied", whereas its only 8 GB being copied on 500GB disk. I tried formatting it. still nothing. What else can i do?

  • Your error is slightly different than the error here. Glad this was sorted rapidly.
    – bmike
    Mar 13, 2014 at 12:42

1 Answer 1


The HDD is formatted using FAT32 which has a known limitation of 4GB file size. You need to format it using exFAT which is supported by OS X and Windows.


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