My colleague wrote about this previously in regards to external drives, but he was discussing high-capacity hard drives you plug into your PC. In dealing with this it occurred to me that Majid probably isn’t alone, and people might not be aware of the fact that you can format a USB key in Windows using one of three available file systems, and that each system has both advantages and limitations. He sent me a screenshot that clearly indicated the problem, as it read “The file is too large for the destination file system.” I replicated the issue quite easily by trying to move a 10GB file to a Fat32 disk, as Fat32 can’t handle any file larger than 4GB.įAT32 has a 4GB file size limitation, making it tough to copy HD or 4K video footage. Majid was unable to copy a movie from his PC to his newly acquired 32GB USB key, and wondered why.