Why can't I copy large files to my External SSD?

If the External SSD is formatted FAT32, an individual file that is 4GB or larger cannot be copied due to limitations in the FAT32 file system. If you have a file that is 4GB or larger, try using a compression utility to make the file smaller. If you can compress it to less than 4GB, you will be able to copy it to a FAT32 volume.

If you do not need cross-platform compatibility for the External SSD, you can eliminate the 4GB file size constraint by reformatting the drive to NTFS (for Windows 7/Vista/XP/2000) or HFS+ (for Mac OS X).

See FAQ on “How do I reformat my External SSD or change the format type?”