File too Large?

I don’t understand why…i can’t copy my MKV file to my passport essential 500GB (is too large for destination file system)

What’s the size of the file and was System File format is using the drive?

MKV file 5GB that file is HD film how to fix that problem??.

Is the file system FAT?? If so, the maximum file size is 4Gb.  Format drive and set file system as NTFS.  That should sort it out.