don't confuse telling LMCE to use the LMCE folder structure with anything to do with the filesystem. All that question does is tell LMCE how you want to use the drive, and to create a number of folders if they don't already exist - it does not format the drive and therefore has nothing to do with the filesystem being used. If this drive is new and you haven't specifically formatted it to a Linux filesystem type then almost certainly it is just a Windows filesystem like the other guys suggested, probably FAT32 which does have much lower maximum file sizes. If it was already formatted this way the LMCE will just use what you have given it....